Relevant bibliographies by topics / X-rays generator

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'X-rays generator'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'X-rays generator.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "X-rays generator"

1

Wilke, Markus, Karsten Harnisch, Wolfram Knapp, Martin Ecke, and Thorsten Halle. "Focusing of x-rays emitted by a pyroelectric x-ray generator for micro x-ray fluorescence." Journal of Vacuum Science & Technology B 37, no. 1 (January 2019): 011203. http://dx.doi.org/10.1116/1.5067322.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sakurai, Kenji. "New Rotating Anode X-Ray Generator For XAFS Experiments." Advances in X-ray Analysis 39 (1995): 149–53. http://dx.doi.org/10.1154/s0376030800022552.

Full text
Abstract:
A high-power X-ray generator equipped with a lanthanum hexaboride cathode has been developed for X-ray absorption fine structure experiments. A high tube-current of more than 1,000 mA can be provided when operated at low tube-voltage of less than 20 kV. In addition, the focal width is narrow enough (less than 0.1 mm) to ensure good energy resolution. Extremely intense monochromatic X-rays (106 ∼ 107 counts/(sec.mm2) at the sample position), which are completely free from higher order harmonics and tungsten contamination lines, are available, when a Johansson-type spectrometer is employed. The filament life has been significantly prolonged by the high vacuum specification of the tube.
APA, Harvard, Vancouver, ISO, and other styles
3

ENDO, Satoru, Masaharu HOSHI, Jun TAKADA, Toshihiro TAKATSUJI, Yosuke EJIMA, Shin SAIGUSA, Akira TACHIBANA, and Masao S. SASAKI. "Development, Beam Characterization and Chromosomal Effectiveness of X-rays of RBC Characteristic X-ray Generator." Journal of Radiation Research 47, no. 2 (2006): 103–12. http://dx.doi.org/10.1269/jrr.47.103.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hasegawa, Hiroaki, and Masanori Sato. "Acquisition of Quasi-Monochromatic Dual-Energy in a Microfocus X-ray Generator and Development of Applied Technology." Diagnostics 9, no. 1 (March 4, 2019): 27. http://dx.doi.org/10.3390/diagnostics9010027.

Full text
Abstract:
In regenerative medicine, evaluation of bone mineral density using a microfocus X-ray generator could eventually be used to determine the degree of bone tissue regeneration. To evaluate bone mineral density against regenerated bone material, two low-energy X-rays are necessary. Herein, the acquisition of quasi-monochromatic, dual-energy soft X-ray and the subsequent medical application were examined using the K-absorption edges of two types of metal filters (i.e., zirconium and tin) in a microfocus X-ray generator. Investigation of the optimal tube voltage and filter thickness to form a quasi-monochromatic energy spectrum with a single filter revealed that a filter thickness of 0.3 mm results in an optimal monochromatization state. When a dual filter was used, the required filter thickness was 0.3 mm for tin and 0.2 mm for zirconium at a tube voltage of 35 kV. For the medical application, we measured quasi-monochromatic, dual-energy X-rays to evaluate the measurement accuracy of bone mineral density. Using aluminum as a simulated bone sample, a relative error of ≤5% was consistent within the aluminum thickness range of 1–3 mm. These data suggest that a bone mineral density indicator of recycled bone material can be easily obtained with the quasi-monochromatic X-ray technique using a microfocus X-ray generator.
APA, Harvard, Vancouver, ISO, and other styles
5

Kitaguchi, Takao, Asami Hayato, Wataru Iwakiri, Yoko Takeuchi, Megu Kubota, Kazuki Nishida, Teruaki Enoto, and Toru Tamagawa. "Development of the GEM-TPC X-ray Polarimeter with the Scalable Readout System." EPJ Web of Conferences 174 (2018): 01015. http://dx.doi.org/10.1051/epjconf/201817401015.

Full text
Abstract:
We have developed a gaseous Time Projection Chamber (TPC) containing a single-layered foil of a gas electron multiplier (GEM) to open up a new window on cosmic X-ray polarimetry in the 2–10 keV band. The micro-pattern TPC polarimeter in combination with the Scalable Readout System produced by the RD51 collaboration has been built as an engineering model to optimize detector parameters and improve polarimeter sensitivity. The polarimeter was characterized with unpolarized X-rays from an X-ray generator in a laboratory and polarized X-rays on the BL32B2 beamline at the SPring-8 synchrotron radiation facility. Preliminary results show that the polarimeter has a comparable modulation factor to a prototype of the flight one.
APA, Harvard, Vancouver, ISO, and other styles
6

Duarte, Raghunatha Faria, Bruno Andrade de Oliveira, and Euzebio De Sousa. "MODELAGEM ELÉTRICA DOS TUBOS DE RAIOS-X UTILIZADOS EM SISTEMAS DE FLUOROSCOPIA COM O OBJETIVO DE MINIMIZAR A RADIAÇÃO TRANSMITIDA AO PACIENTE." e-xacta 10, no. 1 (May 31, 2017): 53. http://dx.doi.org/10.18674/exacta.v10i1.2141.

Full text
Abstract:
<p><em>A finalidade deste artigo foi demonstrar os processos e parâmetros e que são necessários para o funcionamento do tudo de raios-X na utilização em técnica de fluoroscopia, abordou-se a parte construtiva do Gerador de alta tensão e do tubo de raios-X e a forma de como ocorre a liberação dos raios-X que incide ao paciente durante o exame, a condição de como a corrente e a diferença de potencial geram os raios-X que incide ao paciente durante o procedimento e o que uma exposição desnecessária a tais raios pode ser prejudicial em quantidades que não agregam imagem ao exame, desta forma criou-se uma proposta de modelagem elétrica de um tubo de raios-X em que abordou uma alternativa para minimizar a radiação que atravessa ao paciente sem a geração de imagem útil</em>.</p><p>ABSTRACT</p><pre><em>The purpose of this article was to demonstrate the processes and parameters that are necessary for the operation of all X-rays in the use in fluoroscopy technique, the constructive part of the High Voltage Generator and the X-ray tube and the How the X-ray release occurs to the patient during the examination, the condition of how the current and potential difference generates the X-rays incident to the patient during the procedure and what unnecessary exposure to such rays May be detrimental in amounts that do not add an image to the examination. In this way, a proposal was made for the electric modeling of an X-ray tube, in which it addressed an alternative to minimize the radiation that passes through the patient without generating useful images.</em></pre>
APA, Harvard, Vancouver, ISO, and other styles
7

Sơn, Nguyễn An, Hai Van Cao, Trieu Ngoc Le, Giang Van Nguyen, Ha Thi Nguyet Nguyen, Quynh Ngoc Dieu Tran, Tien Nguyen Thuy Bui, and Duc Doan Dinh Le. "Assessment of aerobic bacteria killing activity of low energry X-rays in potatoes." Science and Technology Development Journal - Natural Sciences 5, no. 3 (May 7, 2021): first. http://dx.doi.org/10.32508/stdjns.v5i3.1040.

Full text
Abstract:
Potato is one of popular agricultural products grown and used in the world with high effective economic and nutritional value. In potatoes, there are always have some harmful bacteria species due to the sources of exposure from the seed, soil as well as the post-harvest environment which make deceasing the quality and quantity of potatoes. Usually, irradiation with gamma isotope sources is used in food irradiation, however, the disadvantage of the gamma source is the safe shielding reason even without the use of irradiation. Nowadays, X-ray irradiation in food is one of the methods interest to storage in long time. The first advantage of X-ray irradiation is that most of aerobic bacteria in food is killed, but does it not change the quality of the potato. Moreever, the advantage of an X-ray generator is that it does not have to cover up radiation when not in use. In this study, we have used low energy X-rays emitted from X-ray generator MBR-1618R-BE (Hitachi -Japan) to study the ability to kill aerobic bacteria in potatoes grown in Da Lat. After preparation, potato samples were irradiated at doses ranging from 50 Gy to 5000 Gy. The irradiated samples were homogenized and inoculated on Nutrient Agar and incubated at 370C in an incubator to check the changes of aerobic bacteria. The research showed that the number of aerobic bacteria decreased dramatically to a dose of 1000 Gy (the aerobic bacteria was only less than 0,6%), despite a sharp increase in the dose of irradiation, this number decreased a little. The results also showed that D10 dose was 471,34 Gy.
APA, Harvard, Vancouver, ISO, and other styles
8

Barkan, Shaul, Valeri D. Saveliev, Jan S. Iwanczyk, Liangyuan Feng, Carolyn R. Tull, Bradley E. Patt, Dale E. Newbury, John A. Small, and Nestor J. Zaluzec. "A New Improved Silicon Multi-Cathode Detector (SMCD) for Microanalysis and X-Ray Mapping Applications." Microscopy Today 12, no. 6 (November 2004): 36–37. http://dx.doi.org/10.1017/s1551929500065962.

Full text
Abstract:
A silicon multi-cathode detector (SMCD) has been developed for microanalysis and x-ray mapping applications. The SMCD has a large active area (∼0.5 cm2), excellent energy resolution, and high count rate capability. The detector utilizes novel structures that have produced very low dark current, high electric field, uniform charge collection, low noise and high sensitivity to low energy x-rays. The detector's spectral response was evaluated using a 55Fe radioisotope source, as well as by fluorescing materials with an x-ray generator. Figure 1 shows a 55Fe spectrum with an energy resolution of 125 eV FWHM at 5.9 keV collected at 12 μs peaking time. This energy resolution has been repeatably measured on many different detectors. To evaluate the high count rate x-ray performance, which is very important for fast x-ray mapping, a Cu sample was fluoresced using a Rh-anode x-ray tube.
APA, Harvard, Vancouver, ISO, and other styles
9

Faenov, A. Ya, T. A. Pikuz, S. A. Magnitskiy, N. Nagorskiy, M. Tanaka, M. Ishino, M. Nishikino, et al. "X-ray coherent mirage: Generation of phase – matched coherent point source in plasma media by propagated X-ray laser seeded beam." Laser and Particle Beams 34, no. 3 (May 30, 2016): 402–11. http://dx.doi.org/10.1017/s0263034616000288.

Full text
Abstract:
AbstractThe overview of the recent results for discovery and investigations of a very exotic phenomenon – optical mirage in the X-ray spectral range – is presented. It was found that the mirage could be created in the form of coherent virtual point source, emerging in the vicinity of the second plasma in two-stage oscillator-amplifier X-ray laser. The X-ray source-mirage, rigidly phased with the initial radiation of generator, occurs only when amplification takes place in the amplifier plasma and leads to the appearance of the interference pattern in the form of concentric rings in the spatial profile of the output X-ray laser beam. The equation describing the emergence of X-ray mirage was found, numerical solution of which shows that its formation is similar to that of the optical mirages observed at propagation of light rays through an inhomogeneously heated air. Obtained results have already demonstrated novel comprehension into the physical nature of amplification of X-ray radiation, opening additional opportunities for X-ray interferometry, holography, and other applications, which require multiple rigidly phased sources of coherent radiation.
APA, Harvard, Vancouver, ISO, and other styles
10

Levine, Lance, and Marc Levine. "DRRGenerator: A Three-dimensional Slicer Extension for the Rapid and Easy Development of Digitally Reconstructed Radiographs." Journal of Clinical Imaging Science 10 (October 29, 2020): 69. http://dx.doi.org/10.25259/jcis_105_2020.

Full text
Abstract:
As the interest in image-guided medical interventions has increased, so too has the necessity for open-source software tools to provide the required capabilities without exorbitant costs. A common issue encountered in these procedures is the need to compare computed tomography (CT) data with X-ray data, for example, to compare pre-operative CT imaging with intraoperative X-rays. A software approach to solve this dilemma is the production of digitally reconstructed radiographs (DRRs) which computationally simulate an X-ray-type image from CT data. The resultant image can be easily compared to an X-ray image and can provide valuable clinical information, such as small anatomical changes that have occurred between the pre-operative and operative imaging (i.e., vertebral positioning). To provide an easy way for clinicians to make their own DRRs, we propose DRR generator, a customizable extension for the open-source medical imaging application three-dimensional (3D) Slicer. DRR generator provides rapid computation of DRRs through a highly customizable user interface. This extension provides end-users a free, open-source, and reliable way of generating DRRs. This program is integrated within 3D Slicer and thus can utilize its powerful imaging tools to provide a comprehensive segmentation and registration application for clinicians and researchers. DRR generator is available for download through 3D Slicer’s in-app extension manager and requires no additional software.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "X-rays generator"

1

Colson, Louis. "Conception et réalisation d'un dosimètre opérationnel pour la chirurgie interventionnelle assistée par radioscopie X." Thesis, Normandie, 2021. http://www.theses.fr/2021NORMC208.

Full text
Abstract:
Cette thèse concerne la conception d’un dosimètre opérationnel pour les chirurgiens opérant sous rayonnement X. Les rayons X ont été découverts en 1895 par Wilhelm Röntgen. Depuis, ils sont très largement employés que ce soit pour les contrôles effectués dans les aéroports ou dans le domaine médical. Très utiles pour soigner les personnes, ils ne sont pas sans danger que ce soit pour les patients ou les praticiens hospitaliers. Normalement, les patients sont soumis de manière ponctuelle à des irradiations. En revanche, certains praticiens hospitaliers sont confrontés aux irradiations au quotidien. On distingue ici, les personnels orientés « radiographie », qui sont normalement protégés lors de l’irradiation du patient, de certains chirurgiens qui utilisent les rayons X comme moyen de contrôle durant l’opération et pour laquelle ils sont à proximité de la zone irradiée. C’est à cette problématique que s’intéresse cette thèse. L’étude que nous proposons en partenariat avec le laboratoire de recherche en science du numérique GREYC et l’Ecole des Applications Militaires de l’Energie Atomique (EAMEA) située à Cherbourg, est donc destinée à concevoir et réaliser un détecteur de rayons X pour applications médicales visant à donner une information pour une faible dose et des faibles énergies. La partie simulation et validation (irradiation) s’est faite à l’EAMEA. Le reste du travail s’est déroulé au sein du laboratoire GREYC qui a acquis, depuis plusieurs années, une réelle expérience dans le domaine des capteurs.Pour cela, nous avons commencé par réaliser des simulations Monte-Carlo à l’aide du code de calcul GEANT4 afin de définir la géométrie optimale du détecteur. A la suite de ces résultats de simulation, nous avons réalisé le capteur par pulvérisation cathodique rf magnétron par dépôt successif de couches minces. La couche sensible du capteur a fait l’objet d’une caractérisation Raman dont les résultats sont comparés à la littérature. Une fois le capteur réalisé, nous avons procédé à une caractérisation sous un flux de rayonnement X émis depuis un générateur continu de rayons X. Les différents essais avec le générateur continu ont permis de développer une chaine d’acquisition du signal pour ensuite tester le capteur sous un champ de rayonnement pulsé au Centre Hospitalier Public du Cotentin
This thesis concerns the design of an operational dosimeter for surgeons operating under X-rays. X-rays were discovered in 1895 by Wilhelm Röntgen. Since then, they have been very employed, whether for checks carried out at airports or in the medical field. Very useful for treating people, they are not without danger whether it is for patients or hospital practitioners. Normally, patients are subjected occasionally to irradiation. On the other hand, some hospital practitioners are confronted with daily irradiation. A distinction is made here between “radiography” for diagnostic, who are normally protected during irradiation of the patient, and certain surgeons who use X-rays as a control during the operation and for whom they are close to the irradiated area. This is the issue that this thesis is interested in. The study that we are proposing in partnership with the digital science research laboratory GREYC and the School of Military Applications of Atomic Energy (EAMEA) both located in Cherbourg, is therefore intended to design and produce an X-ray detector for medical applications aimed at giving information for low dose and low energies. The simulation and validation (irradiation)part was done at EAMEA. The rest of the work took place within the GREYC laboratory which has acquired, for several years, real experience in the field of sensors.We started by performing Monte-Carlo simulations using the GEANT4 calculation code in order to define the optimal geometry of the sensor. Following these simulation results, we produced the sensor by rf magnetron sputtering by successive deposition of thin layers. The sensitive layer of the sensor was subject to Raman characterization, the results of which were compared with the literature. Once the sensor had been produced, we carried out a characterization under a flow of X-rays emitted from a continuous X-ray generator. The various tests with the generator continued made it possible to develop a signal acquisition chain in order to test the sensor under a pulsed radiation field in the Centre Hospitalier Public du Cotentin
APA, Harvard, Vancouver, ISO, and other styles
2

Sow, Amadou Tidiane. "Evaluation de la fiabilité d'un générateur à rayons X pour application médicale." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0120/document.

Full text
Abstract:
Les systèmes d’imagerie médicale, principalement les systèmes à rayons X, sont devenus incontournables dans le diagnostic et le traitement des maladies complexes. Le générateur à rayons X fait partie des sous-systèmes critiques d’un système à rayons X. La technologie des générateurs à rayons X se complexifie et les contraintes vues par les composants augmentent. L’évaluation de la fiabilité du générateur à rayons X est par conséquent nécessaire afin d’optimiser la durée de vie de ce dernier. Dans ces travaux de thèse, une méthodologie d’évaluation de la fiabilité d’un générateur à rayons X est proposée. La méthodologie repose sur l’évaluation de la fiabilité allant du composant au système. Des essais de vieillissement sont d’abord réalisés au niveau des composants critiques du générateur afin d’identifier les mécanismes de défaillance et de construire les courbes de durée de vie permettant d’effectuer une prévision de fiabilité. Les paramètres du recueil de fiabilité FIDES ont aussi été utilisés pour construire les courbes de durée de vie des composants critiques. Une méthode de prévision de la fiabilité basée sur l’hypothèse du dommage cumulé avec la règle de Miner est proposée pour évaluer la durée de vie des composants critiques sous contraintes thermomécaniques. Cette méthode utilise les règles de comptage rainflow pour obtenir une distribution des différences de température vues par les composants critiques. Une association de fiabilité permet enfin d’estimer la durée de vie de chaque sous système du générateur à rayons X à travers ses composants critiques
Medical imaging systems, mainly X-rays imaging systems, have become essential in the diagnosis and treatment of complex diseases. X-rays generator is one of the critical subsystems of a medical system. Its technology became more complex and constraints seen by the components increase. An assessment of X-rays generator reliability is therefore necessary to optimize its lifetime. In this thesis, a reliability assessment method of an X-rays generator is proposed. The methodology is based on the assessment of the reliability from component to system. Aging tests are first performed for X-rays generator critical components in order to identify failure mechanisms and build lifetime curves for performing reliability prediction. FIDES guide parameters were also used to construct critical components lifetime curves. A reliability prediction method based on the assumption of cumulative damage with Miner's rule is proposed to evaluate critical components lifetime under thermomechanical stresses. This method uses rainflow counting rules for the temperature cycles distribution of critical components. A reliability block diagram is finally used to estimate the lifetime of each X-ray generator subsystem through its critical components
APA, Harvard, Vancouver, ISO, and other styles
3

Parmee, Richard. "X-ray generation by field emission." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/284924.

Full text
Abstract:
Since the discovery of X-rays over a century ago the techniques applied to the engineering of X-ray sources have remained relatively unchanged. From the inception of thermionic electron sources, which, due to simplicity of fabrication, remain central to almost all X-ray applications at this time, there have been few fundamental technological advances. The emergence of new materials and manufacturing techniques has created an opportunity to replace the traditional thermionic devices with those that incorporate Field Emission electron sources. One of the most important attributes of Field Emission X-ray sources is their controllability, and in particular the fast response time, which opens the door to applying techniques which have formerly been the preserve of optical systems. The work in this thesis attempts to bridge the gap between the fabrication and optimisation of the vacuum electronic devices and image processing aspects of a new approach to high speed radiographic imaging, particularly with a view to addressing practical real-world problems. Off the back of a specific targeted application, the project has involved the design of a viable field emission X-ray source, together with the development of an understanding of the failure modes in such devices, both by analysis and by simulation. This thesis reviews the capabilities and the requirements of X-ray sources, the methods by which nano-materials may be applied to the design of those devices and the improvements and attributes that can be foreseen. I study the image processing methods that can exploit these attributes, and investigate the performance of X-ray sources based upon electron emitters using carbon nanotubes. Modelling of the field emission and electron trajectories of the cathode assemblies has led me to the design of equipment to evaluate and optimise the parameters of an X-ray tube, which I have used to understand the performance that is achievable. Finally, I draw conclusions from this work and outline the next steps to provide the basis for a commercial solution.
APA, Harvard, Vancouver, ISO, and other styles
4

Atkins, C. "Active X-ray optics for the next generation of X-ray space telescopes." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/19312/.

Full text
Abstract:
Described within is the design, manufacture, metrology and X-ray testing of an active X-ray prototype intended for the next generation of X-ray telescopes. One of the challenges faced by the X-ray telescope community is how to combine high resolution and high sensitivity into one system, as weight limitations place constraints on the optics that can be launched. Therefore the mandate of the active X-ray prototype is to provide high sensitivity through the ability of the optics to be nested and to deliver high angular resolution through the active control of the optic’s form. Piezoelectric unimorph actuators provide the active component: it is intended that they will correct for figure errors within the optic and therefore increase the angular resolution capability. The prototype’s design is based upon an ellipsoidal segment which provides point-to-point focussing of an X-ray source. The prototype itself is composed of an electroformed nickel optic where the non-reflective surface is populated with 30 piezoelectric actuators and it is the production of the prototype that is the core of the presented research. Metrology of the actuators’ influence functions is presented and highlight the prototype’s ability to deform its optic surface by microns. In addition, the measured influence functions are compared against finite element models and a distinct similarity between the functions is observed. The prototype was tested at an X-ray beamline facility in November 2008 and the results showed the prototype’s ability to correct the optic to achieve an improved angular resolution: from 0.786 arc-minutes to 0.686 arc-minutes in terms of full width half maximum. Finally, difficulties in the manufacture of the prototype and X-ray testing shall be presented alongside future work in conclusion to this thesis.
APA, Harvard, Vancouver, ISO, and other styles
5

Turcu, Ion Cristian Edmond. "Generation and application of x-rays from excimer laser produced plasmas." Thesis, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265966.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Zhang, Xiaoshi. "Extreme nonlinear optics for coherent x-ray generation." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3256470.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Bloom, Michael Samuel. "Studies on the relativistic electrons and X-rays generated by laser wakefield accelerators." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/29132.

Full text
Abstract:
Laser wakefield accelerators (LWFAs) operate through a high intensity ultra short laser pulse exciting a relativis- tic density wave in a plasma. I carried out experiments constructing LWFAs using lasers of a wide range of powers. Thereby allowing me to examine the generation of electrons and x-rays under these different conditions. The compar- ison of these results with my own and existing analytical models and computational modelling is discussed. In fulfilment of this, I developed novel techniques to measure hard x-rays in the tens of KeV energy range. In measure- ment of the relativistic electrons I found it possible to de- velop techniques to not only accurately measure the energy but also discern the three momentum vectors of electrons measured on a multiscreen electron spectrometer. As LWFAs open up the ability to produce high energy elec- tron beams without the need of tens of meters of RF accel- eration cavities and the lasers used to drive them can also be made relatively compact perhaps one of the most excit- ing application of this is the production of hard x-rays for imaging. As the source size of a LWFA betatron source is typically of micron scale, I investigated using LWFA derived x-rays for phase contrast imaging.
APA, Harvard, Vancouver, ISO, and other styles
8

Galarowicz, Dale. "Instrumentation requirements for TREE Effects Data Collection at the Naval Postgraduate School Flash X-ray facility." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA237681.

Full text
Abstract:
Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, June 1990.
Thesis Advisor(s): Maruyama, X.K. Second Reader: Michael, S.N. "June 1990." Description based on title screen as viewed on March 24, 2010. DTIC Descriptor(s): Data Acquisition, Electronics, Facilities, Instrumentation, Integrated Systems, Noise (Electrical And Electromagnetic), Photons, Pulse Generators, Pulses, Radiation, Requirements, Scale, Transient Radiation Effects, Transients, Trees, Wafers, X Rays. DTIC Identifier(s): Transient radiation effects, Data acquisition, X ray apparatus, Electromagnetic pulses, Theses. Author(s) subject terms: EMP, IEMP, Flash X-Ray Instrumentation. Includes bibliographical references (p. 105-106). Also available in print.
APA, Harvard, Vancouver, ISO, and other styles
9

Smith, Craig. "Efficient generation of bright, collisionally pumped X-ray lasers." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318474.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Martin, Ian Peter Stephen. "Short pulse x-ray generation in synchrotron radiation sources." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:9ac0bcc2-bedb-46d0-b95c-22f4741f45a0.

Full text
Abstract:
This thesis describes an investigation into the performance of different schemes for generating short x-rays pulses via synchrotron radiation emission. A review is given of the methods that have been previously proposed for this task. From this review, three leading schemes are selected for in-depth investigations, each of which explores the boundary of what is presently achievable in accelerator-based light sources. The first scheme generates short x-ray pulses by operating an electron storage ring in a quasi-isochronous state using a ‘low-alpha’ lattice. High and low emittance lattices are developed, studied through simulation and then implemented on the Diamond storage ring. Beam dynamics and bunch length measurements are presented for a variety of machine conditions, and an assessment is made of the minimum practically achievable bunch length for stable user operation. Radiation pulses of 1 ps r.m.s. are demonstrated using this scheme. The second and third schemes investigate performance limits for a linac-based light source through numerical simulations. The first of these generates ultra-short pulses by passing a highly compressed electron bunch through a long undulator to radiate in the ‘single-spike’ regime. A comparison is made with theoretical predictions for the required electron bunch length to operate in this way, which highlights the need for accurate start-to-end simulations. The final scheme generates ultra-short x-ray pulses through laser manipulation of the electron bunches. The modulated electrons pass through a long undulator with tapered gap, such that only the centre of the modulated portion experiences high free-electron laser (FEL) gain. A method to enhance the FEL output from this scheme using a wavelength filter and grating-compressor is investigated. The sensitivity of the two schemes to jitter sources is determined, and it is demonstrated both schemes are capable of generating GW-level, fully coherent sub-fs soft x-ray pulses. Such pulses would open up the development of time-resolved science to new regimes.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "X-rays generator"

1

Orest, Tatchyn Roman, Society of Photo-optical Instrumentation Engineers., and Conference on Ultrafast X-ray Detectors and Applications (2003 : San Diego, Calif.), eds. Fourth-generation x-ray sources and ultrafast x-ray detectors: 4 and 6 August 2003, San Diego, California, USA. Bellingham, Wash., USA: SPIE, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Turcu, I. C. E. X-rays from laser plasmas: Generation and applications. Chichester: Wiley, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

High, Field Interactions and Short Wavelength Generation (1994 St Malo France). High field interactions and short wavelength generation: Summaries of papers presented at the topical meeting, High Field Interactions and Short Wavelength Generation, August 22-25, 1994, St. Malo, France. Washington, D.C: Optical Society of America, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sources, Conference on Optics for Fourth-Generation X.-ray. Fourth-generation x-ray sources and ultrafast x-ray detectors: 4 and 6 August 2003, San Diego, California, USA. Bellingham, WA: SPIE, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Gorgol, Jan. An X-ray photoelectron spectroscopy study of Ag dipped GeSe2 and X-ray generated Auger plasmon losses in GeSe2. Uxbridge: Brunel University, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Pietruszka, Renee B. Operation and characteristics of the Flash X-Ray Generator at the Naval Postgraduate School. Monterey, Calif: Naval Postgraduate School, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Schlachter, A. S. New Directions in Research with Third-Generation Soft X-Ray Synchrotron Radiation Sources. Dordrecht: Springer Netherlands, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Schlachter, A. S., and F. J. Wuilleumier, eds. New Directions in Research with Third-Generation Soft X-Ray Synchrotron Radiation Sources. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0868-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Carstens, Henning. Enhancement Cavities for the Generation of Extreme Ultraviolet and Hard X-Ray Radiation. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94009-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Partridge, Tony. Self-adaptation and rule generation in a fuzzy system for X-ray rocking curve analysis. [s.l.]: typescript, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "X-rays generator"

1

Hayashi, Hiroaki, Natsumi Kimoto, Takashi Asahara, Takumi Asakawa, Cheonghae Lee, and Akitoshi Katsumata. "Generation of X-rays." In Photon Counting Detectors for X-ray Imaging, 1–29. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62680-8_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Förster, E., K. Gäbel, and I. Uschmann. "X-Ray Crystal Microscopy of Laser-Generated Plasmas." In X-Ray Microscopy III, 202–5. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-540-46887-5_46.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Behling, Rolf. "Physics of generation of bremsstrahlung." In Modern Diagnostic X-Ray Sources, 45–83. 2nd ed. Second edition. | Boca Raton : CRC Press, 2021.: CRC Press, 2021. http://dx.doi.org/10.1201/9781003095408-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sakurai, Kenji, Naohisa Osaka, Hitoshi Sakurai, and Hajime Izawa. "New Rotating Anode X-Ray Generator for XAFS Experiments." In Advances in X-Ray Analysis, 149–53. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5377-9_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mineshige, S., M. Takeuchi, and H. Negoro. "Generation of X-ray Fluctuations in X-ray Binaries." In Cataclysmic Variables and Related Objects, 359–62. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0325-8_108.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Wilhein, T. "Investigations on Laser-Generated Plasma Sources." In X-Ray Microscopy and Spectromicroscopy, 373–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-72106-9_38.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

David, C. "Electroplated Nickel Phase Zone Plates Generated by Laser Lithography and Electron-Beam Lithography." In X-Ray Microscopy III, 87–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-540-46887-5_17.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rousseau, Richard M. "Painless XRF Analysis Using New Generation Computer Programs." In Advances in X-Ray Analysis, 77–82. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-9110-5_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Geindre, J. P., P. P. Audebert, A. Rousse, F. Falliès, J. C. Gauthier, A. Mysyrowicz, G. Grillon, et al. "X-Rays Generated by Femtosecond Laser-Produced Plasmas." In Ultrafast Phenomena VIII, 272–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84910-7_82.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Goldstein, Joseph I., Dale E. Newbury, Patrick Echlin, David C. Joy, Charles E. Lyman, Eric Lifshin, Linda Sawyer, and Joseph R. Michael. "Generation of X-Rays in the SEM Specimen." In Scanning Electron Microscopy and X-ray Microanalysis, 271–96. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0215-9_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "X-rays generator"

1

Veron, Laurent, Martial Toury, Christophe Vermare, Frederic Bayol, Gilles Avrillaud, and Alexander A. Kim. "IDERIX: An 8MV Flash X-rays Machine using a LTD Generator Design." In 2007 IEEE Pulsed Power Plasma Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/ppps.2007.4345748.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hassan, Walid, Samuel Legoupil, Stephane Barre, and Claude Rebattet. "Dynamic Vapour Fraction Measurement in Turbopump Inducers by X-Rays." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77371.

Full text
Abstract:
This work intended to evaluate the instantaneous vapour fraction in the turbo-pump inducer of a liquid propellant rocket engine. Experimentations held on an experimental pump test facility and cavitation was attained by reducing the inlet pressure in the machine while maintaining constant the inducer rotational speed. Measurements of vapour fraction through the rotating inducer were achieved by means of an x-ray-based system. The system exerted an industrial x-ray generator and 10 collimated scintillation detectors. Detectors were functioning in current mode thus permitting an acquisition at 5 kHz for each detector. A reference x-ray detector situated between the x-ray generator and the machine permitted the treatment of x-ray beam energy fluctuations related to industrial generators [1, 2, 3]. Acquisitions were performed in three axial positions on the inducer. For each measurement position, three cavitation sequences with different flow rate conditions (Q/Qn = 0.9, 1, 1.1, where Qn is the nominal flow rate) were accomplished. Each cycle is performed by decreasing gradually the pressure while maintaining an imposed rotational speed of 4000 rpm. Each test is constituted of 10 pressure points varying from 2.40 to 0.48 bars representing a complete cavitation sequence. X-ray acquisition was performed for each pressure point and it was carried out for 10 seconds thus corresponding to 667 tours of the inducer. Vapour fraction was determined instantaneously thus showing the applicability and the precision of the method in such measurements despite of the geometry and rotation speed constraints. Consequently a quantitative and qualitative evaluation of the vapour fraction is presented. Results show that the vapour distribution is well related to cavitation development on the blades of the inducer for steady cavitation condition.
APA, Harvard, Vancouver, ISO, and other styles
3

Vermare, Ch, M. Toury, R. Rosol, B. Etchessahar, and R. Nicolas. "A magnetically insulated transmission line connected to the ASTERIX 6MV generator for X-rays diode research." In The 33rd IEEE International Conference on Plasma Science, 2006. ICOPS 2006. IEEE Conference Record - Abstracts. IEEE, 2006. http://dx.doi.org/10.1109/plasma.2006.1706983.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Vermare, Ch, M. Toury, R. Rosol, B. Etchessahar, and R. Nicolas. "A magnetically insulated transmission line connected to the asterix 6mv generator for x-rays diode research." In The 33rd IEEE International Conference on Plasma Science, 2006. ICOPS 2006. IEEE Conference Record - Abstracts. IEEE, 2006. http://dx.doi.org/10.1109/plasma.2006.1707216.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Ryspaeva, E. B. "X-ray emission fromHerbig stars." In Всероссийская с международным участием научная конференция студентов и молодых ученых, посвященная памяти Полины Евгеньевны Захаровой «Астрономия и исследование космического пространства». Ural University Press, 2021. http://dx.doi.org/10.15826/b978-5-7996-3229-8.42.

Full text
Abstract:
The archived X-ray observations of 9 Ae/Be Herbig stars obtained on the XMM-Newton space observatory are analysed for checking the hypotheses of their X-rays formation. An analysis of the dependences of the X-ray radiation characteristics for Herbig stars on the parameters of the stars revealed a close relationship between the magnetic activity and the processes of generation of X-ray radiation from Herbig stars, as well as the possible presence of a non-thermal component of the X-ray spectra.
APA, Harvard, Vancouver, ISO, and other styles
6

Tran, Tiffany, Pratik Samant, Liangzhong Xiang, and Yingtao Liu. "X-Ray Induced Acoustic Computed Tomography for Non-Destructive Testing of Aircraft Structure." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10480.

Full text
Abstract:
Abstract For decades, aircraft disasters have always been a concern for airline companies and especially for consumers. Scientists all over the world have been constantly trying to study, discover and invent new methods for testing and prevention to reduce future aircraft accidents. One of those methods is non-destructive testing, which is a widely adaptive process for analyzing structural integrity over wide arrays of object. X-rays, ultrasound and computed tomography (CT) are non-destructive testing applications commonly used for the commercial aircraft maintenance. These non-destructive testing methods for aircraft structures give us high-quality images of structural damage but, there are some disadvantages related to resolution and the contrast mechanism of the image. The goal of this study is to demonstrate the concept of X-Ray Induced Acoustic Computed Tomography (XACT) imaging method for defect detection and localization through simulations using k-wave MATLAB toolbox. XACT is a technique based on the X-ray induced acoustic effect. In XACT, a short pulsed of X-rays are required to achieve thermal response and generate acoustic waves. X-ray travels to an object, the photons are absorbed causing the temperature in the object to raise, which generates acoustic waves due to thermoelastic expansion. These acoustic waves are then detected by ultrasonic transducers. Within the fuselage of the aircraft, the aircraft’s stiffener is designed using SolidWorks. along with two different types of defects through voids due to manufacturing imperfection process. As well as, cracks in the surface of the model due to mechanical failures are created in MATLAB. Two properties of Aluminum 6065 and Inconel 625 materials were selected for our simulation study since it is often used for the fuselage and/or aircraft engines. XACT images are generated under the combination of high X-ray absorption and ultrasonic transducers that will be able to overcome the disadvantages of the X-ray imaging technique and ultrasound imaging technique in image resolution and contrast mechanisms. The results from this simulation study demonstrate that the XACT method not only gives us high-resolution images but moreover, higher contrast of images that also allows us to detect position accuracy of the cons created.
APA, Harvard, Vancouver, ISO, and other styles
7

Noda, Daiji, Naoki Takahashi, Atsushi Tokuoka, Megumi Katori, and Tadashi Hattori. "Fabrication of Carbon Membrane X-Ray Mask for X-Ray Lithography." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40287.

Full text
Abstract:
X-ray radiographic imaging techniques have been applied in many fields. Previously we proposed a method for X-ray phase imaging using X-ray Talbot interferometry which requires the use of X-ray gratings. In this work, we fabricated the X-ray gratings needed for X-ray Talbot interferometry using an X-ray lithography technique. For X-ray lithography the accuracy of the fabricated structure depends largely on the accuracy of the X-ray mask. Conventionally a resin material is used for the support membrane for large area X-ray masks. However, resin membranes have the disadvantage that they can sag after several cycles of X-ray exposure due to the heat generated by the X-rays. For our new proposal we used thin carbon wafers for the membrane material because carbon has an extremely small thermal expansion coefficient. This new type of X-ray mask is very easy to process, and it is expected that it will lead to more precise X-ray masks. We fabricated carbon membrane X-ray masks on 6 inch wafers with a 1:1 line-to-space ratio and a pitch of 5.3 μm, covering a large effective area of 100 × 100 mm2.
APA, Harvard, Vancouver, ISO, and other styles
8

Baydoun, Ahmad M. R., and Ramsey F. Hamade. "A Study of the Effect of Extended Hounsfield Unit Range and Voxel Size on Defect Detection in Friction Stir Welds." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23274.

Full text
Abstract:
Abstract Friction stir welding (FSW) is a novel welding method that is garnering attention, in part, due to its ability to join dissimilar materials. One of the challenges in producing dissimilar friction welded joints is ensuring the welds are defect-free. Nondestructive testing (NDT) methods such as ultrasonic waves, gamma rays, X-rays, and X-ray CT, are gaining popularity as a method to detect internal defects in FSW joints. In this study, dissimilar AA1050-AA6061-T6 FSW lap welds are Manufactured and then examined using an NDT X-ray CT technique. The effects of two critical X-ray CT scanning parameters (voxel size and Hounsfield unit (HU)) on the detection of internal defects are investigated. The samples are scanned via X-ray CT at two different voxel sizes (2.457 E−02 and 1.420 E−03 mm3) and two HU ranges (12-bit and 16-bit depth). The generated Digital Imaging and Communications in Medicine (DICOM) images are segmented based on a proper HU threshold found via the Otsu thresholding method. The findings show that Small voxel size (higher resolution) improves the ability of detecting internal defects and improves the effectiveness of the thresholding process. Higher HU range results in a wider separation between detected material peaks, thus enhancing the effectiveness of the thresholding process as well.
APA, Harvard, Vancouver, ISO, and other styles
9

Abboud, Frank E., Sergey V. Babin, Varoujan Chakarian, Abe Ghanbari, Robert Innes, Frederick Raymond III, Allan L. Sagle, and Charles A. Sauer. "Design considerations for an electron-beam pattern generator for the 130-nm generation of masks." In Photomask and X-Ray Mask Technology VI, edited by Hiroaki Morimoto. SPIE, 1999. http://dx.doi.org/10.1117/12.360239.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

O'Neill, F. "Laser-plasma XUV sources generated by KrF lasers." In Soft X-Rays Optics and Technology, edited by E. Koch and Guenther A. Schmahl. SPIE, 1986. http://dx.doi.org/10.1117/12.964885.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "X-rays generator"

1

Pivovaroff, M., and R. Soufli. FY06 LDRD Final Report Next-generation x-ray optics: focusing hard x-rays. Office of Scientific and Technical Information (OSTI), March 2007. http://dx.doi.org/10.2172/909641.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hazi, A. Lightweight Target Generates Bright, Energetic X-Rays. Office of Scientific and Technical Information (OSTI), January 2006. http://dx.doi.org/10.2172/883594.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Mitchell, Dean J., Lee T. Harding, Gregory G. Thoreson, Lisa Anne Theisen, John Ethan Parmeter, and Kyle Richard Thompson. Characterization of X-ray generator beam profiles. Office of Scientific and Technical Information (OSTI), July 2013. http://dx.doi.org/10.2172/1090220.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hostetter, James. Construction of a Novel Tabletop X-Ray Generator. Office of Scientific and Technical Information (OSTI), August 2010. http://dx.doi.org/10.2172/1082832.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Elder, Richard C., and William R. Heineman. X-Ray Absorption Spectroscopy of Electrochemically Generated Species. Fort Belvoir, VA: Defense Technical Information Center, January 1989. http://dx.doi.org/10.21236/ada205572.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Zelinsky, A. Status of Kharkov X-Ray Generator Based on Compton Scattering NESTOR. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/839849.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Schollmeier, Marius, Tommy Ao, Ella Suzanne Field, Benjamin Robert Galloway, Patrycja E. Kalita, Mark W. Kimmel, Joel Long, et al. X-Ray Diffraction Measurements on Laser-Compressed Polycrystalline Samples Using a Short-Pulse Laser Generated X-Ray Source. Office of Scientific and Technical Information (OSTI), September 2018. http://dx.doi.org/10.2172/1474265.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Opachich, Yekaterina, Jeffrey Koch, and Patrick Ross. High-Yield X-ray Photocathodes for Next-Generation Imaging Detectors. Office of Scientific and Technical Information (OSTI), November 2016. http://dx.doi.org/10.2172/1755232.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Rocca, Jorge. Generation of Bright Soft X-ray Laser Beams (Final Report). Office of Scientific and Technical Information (OSTI), December 2020. http://dx.doi.org/10.2172/1737738.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ditmire, Todd Raymond. Soft x-ray generation in gases with an ultrashort pulse laser. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/251378.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'X-rays generator' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography