Academic literature on the topic 'Velocity spectrometry'

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Journal articles on the topic "Velocity spectrometry"

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Kim, Myung Hwa, Brian D. Leskiw, Lei Shen, and Arthur G. Suits. "Velocity map imaging mass spectrometry." International Journal of Mass Spectrometry 252, no. 1 (May 2006): 73–78. http://dx.doi.org/10.1016/j.ijms.2006.01.030.

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Jacobsen, A. S., M. Salewski, J. Eriksson, G. Ericsson, S. B. Korsholm, F. Leipold, S. K. Nielsen, J. Rasmussen, and M. Stejner. "Velocity-space sensitivity of neutron spectrometry measurements." Nuclear Fusion 55, no. 5 (April 16, 2015): 053013. http://dx.doi.org/10.1088/0029-5515/55/5/053013.

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Srama, Ralf, Wolfgang Woiwode, Frank Postberg, Steven P. Armes, Syuji Fujii, Damien Dupin, Jonathan Ormond-Prout, et al. "Mass spectrometry of hyper-velocity impacts of organic micrograins." Rapid Communications in Mass Spectrometry 23, no. 24 (November 18, 2009): 3895–906. http://dx.doi.org/10.1002/rcm.4318.

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Coghill, Peter J., Michael J. Millen, and Brian D. Sowerby. "On-Line Particle Size Analysis Using Ultrasonic Velocity Spectrometry." Particle & Particle Systems Characterization 14, no. 3 (June 1997): 116–21. http://dx.doi.org/10.1002/ppsc.199700024.

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Brouard, M., E. K. Campbell, A. J. Johnsen, C. Vallance, W. H. Yuen, and A. Nomerotski. "Velocity map imaging in time of flight mass spectrometry." Review of Scientific Instruments 79, no. 12 (December 2008): 123115. http://dx.doi.org/10.1063/1.3036978.

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Bull, James N., Jason W. L. Lee, Sara H. Gardiner, and Claire Vallance. "Account: An Introduction to Velocity-Map Imaging Mass Spectrometry (VMImMS)." European Journal of Mass Spectrometry 20, no. 2 (April 2014): 117–29. http://dx.doi.org/10.1255/ejms.1264.

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Winter, B., E. Halford, and M. Brouard. "Velocity corrected ion extraction in microscope mode imaging mass spectrometry." International Journal of Mass Spectrometry 356 (December 2013): 14–23. http://dx.doi.org/10.1016/j.ijms.2013.09.012.

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Li, Yu-Fan, Dong-Mei Zhao, Wen-Chang Zhou, Dong-Bin Qian, Jie Yang, Shao-Feng Zhang, Xiao-Long Zhu, and Xin-Wen Ma. "Nonlinear response of phosphor screen used in velocity map imaging spectrometry." International Journal of Mass Spectrometry 442 (August 2019): 23–28. http://dx.doi.org/10.1016/j.ijms.2019.04.007.

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Gundlach-Graham, Alexander, Elise A. Dennis, Steven J. Ray, Christie G. Enke, Charles J. Barinaga, David W. Koppenaal, and Gary M. Hieftje. "Laser-ablation sampling for inductively coupled plasma distance-of-flight mass spectrometry." Journal of Analytical Atomic Spectrometry 30, no. 1 (2015): 139–47. http://dx.doi.org/10.1039/c4ja00231h.

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Doms, Marco, and Jörg Müller. "Design, Fabrication, and Characterization of a Micro Vapor-Jet Vacuum Pump." Journal of Fluids Engineering 129, no. 10 (May 22, 2007): 1339–45. http://dx.doi.org/10.1115/1.2776968.

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A microelectromechanical system (MEMS) vapor-jet pump for vacuum generation in miniaturized analytical systems, e.g., micro-mass-spectrometers (Wapelhorst, E., Hauschild, J., and Mueller, J., 2005, “A Fully Integrated Micro Mass Spectrometer,” in Fifth Workshop on Harsh-Environment Mass Spectrometry;Hauschild, J., Wapelhorst, E., and Mueller, J., 2005, “A Fully Integrated Plasma Electron Source for Micro Mass Spectrometers,” in Ninth International Conference on Miniaturized Systems for Chemistry and Life Sciences (μTAS), pp. 476–478), is presented. A high velocity nitrogen or water vapor jet is used for vacuum generation. Starting from atmospheric pressure, a high throughput of more than 23ml∕min and an ultimate pressure of 495mbars were obtained with this new type of micropump. An approach for the full integration of all components of the pump is presented and validated by experimental results. The pump is fabricated from silicon and glass substrates using standard MEMS fabrication techniques including deep reactive ion etching, trichlorosilane molecular vapor deposition, and metal-assisted chemical etching for porous silicon fabrication. Micromachined pressure sensors based on the Pirani principle have been developed and integrated into the pump for monitoring.
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Dissertations / Theses on the topic "Velocity spectrometry"

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Papanastasiou, Dimitris. "Space velocity correlation in orthogonal time-of-flight mass spectrometry." Thesis, Manchester Metropolitan University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423073.

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Al-Rasheedi, Majed A. F. "A novel ultrasonic spectrometer with automatic control and geometrical alignment for the study of liquids." Thesis, Keele University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388354.

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Gardiner, Sara Heather. "Photofragment velocity-map imaging of organic molecules." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:2af637e3-7984-40c9-be35-cffe3eaa31e6.

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Photofragment velocity-map imaging (VMI) has generally been employed to investigate the photodissociation dynamics of relatively small molecular systems (< 5 atoms). The work reported in this thesis focuses on the application of this technique for the investigation of the unimolecular photodissociation of larger chemical systems, which are of interest to a broad cross section of the chemical community. Typically, VMI studies involve state-selective detection of one particular fragmentation product, and so are often limited to the investigation of a single dissociation channel. By employing vacuum ultra-violet (VUV) photoionization, we are able to detect most, if not all of the fragments resulting from the dissociation of a neutral species, with ‘universal’ ionization being achieved in the ideal case when the fragment ionization energies are all lower than the VUV photon energy. This capability becomes particularly important when investigating larger systems, since these often display complex dynamics with multiple competing fragmentation pathways. Our approach allows us to investigate the different photofragmentation processes occurring for a particular system, to evaluate the relative importance of the active dissociation channels, and to gain insight into the energy partitioning amongst the fragments. A study of the UV photodissociation of two neutral alkyl iodide molecules demonstrates the first use in our laboratory of ‘universal’ ionization in combination with VMI. Studies into the photofragmentation processes resulting from 193 nm photoexcitation of neutral N,N-dimethylformamide, a small-molecule model for a peptide bond, and a number of neutral cyclic alkenes, which undergo the retro-Diels-Alder reaction, are also presented. The remaining studies presented in this thesis have investigated the photofragmentation processes of ionic species, generated by means of VUV photoionization. In the case of ion dissociation each fragmentation channel necessarily produces one charged species, which may be detected using the VMI technique. Therefore, such studies provide an insight into all of the active channels. An in-depth VMI study of the UV photodissociation of two ethyl halide cations is presented, which demonstrates the successful investigation of the multiple photofragmentation pathways of these ionic species. The remainder of the cation photodissociation studies are of relevance to a number of common processes known to occur in mass spectrometry, including the McLafferty rearrangement, the retro-Diels-Alder reaction, and ‘peptide’ bond fragmentation. By velocity-map imaging the products of these reactions, further information is obtained concerning these dissociation processes, which are no doubt of interest to the wider chemical community. This work forms part of the velocity-map imaging mass spectrometry (VMImMS) project. VMImMS involves imaging each of the fragmentation products that result from dissociation of a parent molecule of interest, with the aim of increasing the amount of information that can be obtained from a mass-spectrometry-type experiment. The work presented in this thesis demonstrates that VMImMS allows us to unravel details of the dissociation dynamics of both neutral and ionic species, and is potentially a powerful technique for investigating the fragmentation processes of increasingly complex systems.
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Beck, Jonathan R. "Collision velocity dependence of products formed via surface induced dissociation /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3025601.

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Radicic, William Neil. "Velocity and Temperature Characterization of the First Vacuum Stage Expansion in an Inductively Coupled Plasma - Mass Spectrometer." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd435.pdf.

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Barney, Brandon Lee. "Image-Charge Detection – Novel Instrumentation and Applications." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5616.

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Image-charge detection is an analytical technique in which a highly-charged particle is detected by the magnitude of the image current that it generates in a detecting electrode. This current is represented as a voltage between the charged particle and the sensing electrode. It is a single particle detection method, ideal for the analysis of large, variable mass particles such as biological cells. Some of the physical properties of Bacillus subtilis spores were explored using different applications of image-charge detection. B. subtilis is a gram-negative spore-forming bacteria that has been shown to exhibit extremophile behavior. The particular extremophile behavior that was investigated in this study is the resistance to extreme mechanical stress. The effects of high-velocity impacts upon these spores were studied using image-charge detection. The elastic properties of these spores as well as spore survivability to high-velocity impacts were investigated. Spores were shown to survive impacts at velocities up to 299 ± 28 m/s. The average kinetic energy loss experienced by impacting spores, regardless of velocity at impact, was between 71 and 72%. Both conventional and novel image-charge detection techniques were used for these studies. The novel version of a charge detector that was demonstrated was fabricated using patterned metal electrodes on printed circuit boards. The simplicity and versatility of this method was demonstrated with a multi-stage charge detector, a unique bouncing detector, and charge-detection mass spectrometry detector which is capable of measuring the absolute mass of a single highly-charged particle.
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Zaouris, Dimitrious K. "Velocity map imaging and other spectrometric studies of molecules and clusters." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627942.

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The growing interest in the study of gas phase photodissociation dynamics has led to the development of experimental techniques to aid in the understanding of these processes in small (diatomic or triatomic molecules) and in larger systems. In addition, deposition of molecules on large clusters provides information of the clustering dynamics, which can shed light on the processes taking place in the condensed phase. The experiments described in this thesis use nanosecond and femtosecond velocity map imaging to explore the photo dissociation dynamics of a variety of systems on different timescales, and mass spectrometry to investigate the pick-up dynamics of several molecules on clusters. The experiments described in Chapter 3 concern iodine atom loss following the UV dissociation of iodocyclohexane. The bimodal kinetic energy distributions observed are attributed to the dissociation of axial and equatorial conformers of this molecule. The experimental results were complemented by ab initio calculations and two impulsive models. The results were also compared to the dissociation of CH3I, which is generally considered a benchmark system in the field of photodissociation dynamics. In Chapter 4 a time-resolved investigation of the photophysics of electronically excited chlorophenols is presented. The results emphasise the effect of intramolecular hydrogen bonding. To validate these results, the excited state decay of phenol has also been studied and used as a benchmark, since its dynamics have been studied in more detail. Furthermore, there is an introduction to on going high accuracy ab initio calculations, which aim to investigate the various conical intersections by which the electronically excited molecules can transfer to lower electronic states. Chapter 5 presents the experimentally determined pick-up cross-sections of several molecules (NO, HC1, etc) on ice nanoparticles. Particular emphasis is devoted to the pick-up of water molecules by large water clusters. For this process MD simulations have also been carried out. The experimental and theoretical results have been compared to the geometrical cross-sections, which are widely used in atmospheric models. The differences are discussed and the conclusions suggest that the (larger) experimentally determined cross-sections should be used in atmospheric models. Finally, Chapter 6 is dedicated to the recent upgrades of the Bristol VMI spectrometer. The spectrometer was fitted with new ion optics, for which the design details, the simulations and the results from experimental testing are presented. In general the new ion optics design performs better than the one used till now, giving better velocity resolution. However, the final resolution achieved thus far is limited 'by factors other than the configuration of the assembly. These factors are investigated and an effort is made to quantify their effect on the achievable resolution.
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Agbonkonkon, Nosa. "Counter-flow Ion Mobility Analysis: Design, Instrumentation, and Characterization." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2136.pdf.

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Hocking, Matthew James. "An advanced wide bandwidth ultrasound absorption and velocity spectrometer for industrial applications." Thesis, Keele University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319023.

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Crepp, Justin R., Jonathan Crass, David King, Andrew Bechter, Eric Bechter, Ryan Ketterer, Robert Reynolds, et al. "iLocater: a diffraction-limited Doppler spectrometer for the Large Binocular Telescope." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/622805.

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We are developing a stable and precise spectrograph for the Large Binocular Telescope (LBT) named "iLocater." The instrument comprises three principal components: a cross-dispersed echelle spectrograph that operates in the YJ-bands (0.97-1.30 mu m), a fiber-injection acquisition camera system, and a wavelength calibration unit. iLocater will deliver high spectral resolution (R similar to 150,000-240,000) measurements that permit novel studies of stellar and substellar objects in the solar neighborhood including extrasolar planets. Unlike previous planet-finding instruments, which are seeing-limited, iLocater operates at the diffraction limit and uses single mode fibers to eliminate the effects of modal noise entirely. By receiving starlight from two 8.4m diameter telescopes that each use "extreme" adaptive optics (AO), iLocater shows promise to overcome the limitations that prevent existing instruments from generating sub-meter-per-second radial velocity (RV) precision. Although optimized for the characterization of low-mass planets using the Doppler technique, iLocater will also advance areas of research that involve crowded fields, line-blanketing, and weak absorption lines.
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Books on the topic "Velocity spectrometry"

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United States. National Aeronautics and Space Administration., ed. Comprehensive analyses of data collected from TEREK (solar EUV telescope) RES-C (solar x-ray spectrometer) and SORS (Solar Radio Spectrometer) on board CORONAS-1 using magnetohydrodynamic models: Final report; award number: NAGW-4665; period of performance: June 1, 1995 - November 30, 1996. [Washington, DC: National Aeronautics and Space Administration, 1997.

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Absolute wind measurements in the lower thermosphere of Venus using infrared heterodyne spectroscopy. Washington, D.C: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990.

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Book chapters on the topic "Velocity spectrometry"

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Deveikis, Viktoras, Julius Sperauskas, and Vladas Vansevičius. "Binary Star Detection with the GAIA Radial Velocity Spectrometer." In Census of the Galaxy: Challenges for Photometry and Spectrometry with GAIA, 133–37. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0361-2_21.

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Behrens, Richard. "The Application of Simultaneous Thermogravimetric Modulated Beam Mass Spectrometry and Time-of-Flight Velocity Spectra Measurements to the Study of the Pyrolysis of Energetic Materials." In Chemistry and Physics of Energetic Materials, 327–46. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2035-4_14.

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Pietraszewski, K. A. R. B., N. K. Reay, and J. Ring. "A New Fabry-Perot Radial Velocity Spectrometer." In Seismology of the Sun and the Distant Stars, 377–89. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4608-8_41.

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Kwater, M., K. Ruebenbauer, and U. D. Wdowik. "Calibration of the Mössbauer Spectrometer Velocity by Optical Methods." In Mössbauer Spectroscopy in Materials Science, 407–12. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4548-0_38.

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Isaak, G. R., and A. R. Jones. "Continuous Magnetic Calibration of (Velocity) Sensitivity of Oscillation Spectrometers." In Advances in Helio- and Asteroseismology, 467–69. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-4009-3_92.

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Fletcher, J. M., and Robert D. McClure. "Radial Velocity Spectrometers on the Dominion Astrophysical Observatory 1.2m and 0.4m Telescopes." In Instrumentation and Research Programmes for Small Telescopes, 447–48. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-010-9433-7_89.

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Yau, A. W., E. Drakou, M. J. Greffen, D. J. Knudsen, and E. Sagawa. "Radio-Frequency Ion Mass Spectrometer Measurements of Ion Composition, Velocity and Temperature: the EXOS-D Suprathermal Mass Spectrometer." In Measurement Techniques in Space Plasmas: Particles, 307–12. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm102p0307.

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Brekke, P., O. Kjeldseth-Moe, and R. A. Harrison. "High-Velocity Flows in an Active Region Loop System Observed with the Coronal Diagnostic Spectrometer (CDS) on SOHO." In The First Results from SOHO, 511–21. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5236-5_28.

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Marks II, Robert J. "Introduction." In Handbook of Fourier Analysis & Its Applications. Oxford University Press, 2009. http://dx.doi.org/10.1093/oso/9780195335927.003.0006.

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Jean Baptiste Joseph Fourier’s powerful idea of decomposition of a signal into sinusoidal components has found application in almost every engineering and science field. An incomplete list includes acoustics [1497], array imaging [1304], audio [1290], biology [826], biomedical engineering [1109], chemistry [438, 925], chromatography [1481], communications engineering [968], control theory [764], crystallography [316, 498, 499, 716], electromagnetics [250], imaging [151], image processing [1239] including segmentation [1448], nuclear magnetic resonance (NMR) [436, 1009], optics [492, 514, 517, 1344], polymer characterization [647], physics [262], radar [154, 1510], remote sensing [84], signal processing [41, 154], structural analysis [384], spectroscopy [84, 267, 724, 1220, 1293, 1481, 1496], time series [124], velocity measurement [1448], tomography [93, 1241, 1242, 1327, 1330, 1325, 1331], weather analysis [456], and X-ray diffraction [1378], Jean Baptiste Joseph Fourier’s last name has become an adjective in the terms like Fourier series [395], Fourier transform [41, 51, 149, 154, 160, 437, 447, 926, 968, 1009, 1496], Fourier analysis [151, 379, 606, 796, 1472, 1591], Fourier theory [1485], the Fourier integral [395, 187, 1399], Fourier inversion [1325], Fourier descriptors [826], Fourier coefficients [134], Fourier spectra [624, 625] Fourier reconstruction [1330], Fourier spectrometry [84, 355], Fourier spectroscopy [1220, 1293, 1438], Fourier array imaging [1304], Fourier transform nuclear magnetic resonance (NMR) [429, 1004], Fourier vision [1448], Fourier optics [419, 517, 1343], and Fourier acoustics [1496]. Applied Fourier analysis is ubiquitous simply because of the utility of its descriptive power. It is second only to the differential equation in the modelling of physical phenomena. In contrast with other linear transforms, the Fourier transform has a number of physical manifestations. Here is a short list of everyday occurrences as seen through the lens of the Fourier paradigm. • Diffracting coherent waves in sonar and optics in the far field are given by the two dimensional Fourier transform of the diffracting aperture. Remarkably, in free space, the physics of spreading light naturally forms a two dimensional Fourier transform. • The sampling theorem, born of Fourier analysis, tells us how fast to sample an audio waveform to make a discrete time CD or an image to make a DVD.
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Conference papers on the topic "Velocity spectrometry"

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Lopez, Celienid, and Paul E. Sojka. "Size and Velocity Characterization of Asymmetric Twin-Fluid Nebulizer Sprays." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13287.

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Drop size and velocity measurements were obtained for two nebulizers unique in their asymmetric configuration—a "quarter-moon" liquid exit port, whose axis of symmetry is located nearly co-axially with a circular air exit port. The two devices, a Mira Mist and an LB-30, are commercially available units originally designed for mass-spectrometry applications, but also useful for medicinal/pharmaceutical spray purposes. Sprays were characterized in terms of droplet velocity and size at a number of axial and radial positions. Measurements were performed using a Dantec DualPDA. Air injection pressures of 270 to 410 kPa (25 to 45 psig) and liquid flow rates of 75 to 1200 ml/hr were the operating conditions considered in this study. Water and ethanol were used as test fluids since their physical properties span the range of typical products. The results are useful because they show, for the first time, how sprays formed from such asymmetric devices evolve as they move away from the atomizer.
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Jodicke, K., S. Arendt, W. Hofacker, and W. Speckle. "Quality analysis of fresh and dried mangoes." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7526.

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Organic acids, sugar and colour define the quality and the taste of mangoes. The quality deteriorates during drying on a single-layer-dryer. Quality losses can be reduced by using drying parameters that influence the quality less. In this research, the contents of ascorbic acid, organic acids and sugar as well as colour changes and shrinkage are analysed. Analyses are carried out at different temperatures, dew point temperatures and air velocities using HPLC, IC and UV/Vis- spectrometry. The quality criteria showed the lowest changes at a temperature of 60°C, dew point temperature of 20°C and an air velocity of 0.9 m/s.Keywords: organic acids; sugars; colour; shrinkage; thin-layer-dryer.
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Nottoli, Emmanuelle, Philippe Bienvenu, Didier Bourlès, Alexandre Labet, Maurice Arnold, and Maité Bertaux. "Determination of Long-Lived Radionuclide (10Be, 41Ca, 129I) Concentrations in Nuclear Waste by Accelerator Mass Spectrometry." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96054.

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Radiological characterization of nuclear waste is essential for storage sites management. However, most of Long-Lived RadioNuclides (LLRN), important for long-term management, are difficult to measure since concentration levels are very low and waste matrices generally complex. In an industrial approach, LLRN concentrations are not directly measured in waste samples but assessed from scaling factors with respect to easily measured gamma emitters. Ideally, the key nuclide chosen (60Co, 137Cs) should be produced by a similar mechanism (fission or activation) as the LLRN of interest and should have similar physicochemical properties. However, the uncertainty on the scaling factors, determined from experimental and/or calculation data, can be quite important. Consequently, studies are performed to develop analytical procedures which would lead to determine precisely the concentration of LLRN in nuclear waste. In this context, the aim of this study was to determine the concentrations of three LLRN: 129I (T1/2 = 15.7×106 a), 41Ca (T1/2 = 9.94×104 a) and 10Be (T1/2 = 1.387×106 a) in spent resins used for primary fluid purification in Pressurized Water Reactors using Accelerator Mass Spectrometry (AMS) for measurement. The AMS technique combined mass spectrometry and nuclear physics to achieve highly efficient molecular and elemental isobars separation. Energies of several Million Electron-Volt transferred to the ions in the first accelerating part of specifically developed tandem accelerators lead to molecular isobars destruction through interaction with the argon gas used to strip the injected negative ions to positive ones. At the exit of the tandem accelerator, the energy acquired in both accelerating parts allows an elemental isobars separation based on their significantly different energy loss (dE) while passing through a thickness of matter dx that is proportional to their atomic number (Z) and inversely proportional to ions velocity (ν) according to the Bethe-Block law (1). (1)dEdx=k*Z2ν2 The use of a particle accelerator in conjunction with a selective ion source, mass and energy filters and a high-performance detector thus allow unambiguously identifying and measuring analyte concentration against much more abundant interfering isobars. The development of AMS and of related applications have recently been extensively reviewed [1–3]. Up to now, the potentialities of the accelerator mass spectrometry technique were explored for the measurement of cosmogenic radionuclides produced in the Earth’s environment either in the atmosphere or in the Earth’s crust (in situ-production). Many applications aiming to date and/or quantify Earth surface processes have been developed in the fields of geology, geomorphology and planetary sciences as well as archeology paleoanthropology and biomedicine. The present study extends the scope of AMS to nuclear industry. Because AMS facilities are not widely accessible and difficult to handle, LLRN concentrations in nuclear waste are usually determined using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and radiometric techniques. However for the measurement of very low LLRN concentrations, AMS becomes the most effective measurement method with detection limits of 105–106 atoms per sample. In this study, AMS measurements were performed using the French AMS national facility ASTER located at the Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement (CEREGE). The challenge was to define a chemical treatment procedure allowing the measurement of the three nuclides, 10Be, 41Ca and 129I, by AMS. Each method selection was based on three main requirements: 1) a quantitative recovery in solution of Be, Ca, I and key radionuclides after resin mineralization, 2) a selective extraction from the sample matrix and the separation from β-γ emitters (3H, 14C, 55Fe, 59Ni, 60Co, 63Ni, 90Sr, 125Sb, 134Cs, 137Cs) and isobars, 3) the precipitation of each element under the best suited forms (i.e. AgI, CaF2, BeO) for AMS measurements. The chosen methods were optimized on synthetic solutions and finally applied for the determination of the three LLRN concentrations in spent resins from a 900 MWe Nuclear Power Reactor.
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Gibson, Steven R. "Tolerancing a radial velocity spectrometer within Zemax." In SPIE Astronomical Telescopes + Instrumentation, edited by George Z. Angeli and Philippe Dierickx. SPIE, 2016. http://dx.doi.org/10.1117/12.2233059.

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Holland, Andrew D., Mark S. Cropper, David Katz, Ian B. Hutchinson, Richard M. Ambrosi, Tim J. Stevenson, David R. Smith, et al. "CCDs for the rotational velocity spectrometer on GAIA." In Optical Systems Design, edited by Jean-Pierre Chatard and Peter N. J. Dennis. SPIE, 2004. http://dx.doi.org/10.1117/12.517151.

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Geyer, Edward H., and Thilo Bauer. "Reversion radial velocity (REVRAVEL): a new principle for a stellar radial velocity spectrometer." In SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, edited by Jinxue Wang and Paul B. Hays. SPIE, 1994. http://dx.doi.org/10.1117/12.187597.

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Patel, Ekta, Rajesh K. Kushawaha, Hardik Mewada, and Umang Soni. "Developing a multi-plates velocity map imaging spectrometer for 3D velocity vector imaging of electrons and ions." In 2017 Nirma University International Conference on Engineering (NUiCONE). IEEE, 2017. http://dx.doi.org/10.1109/nuicone.2017.8325619.

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Percival, Jeffrey W., Qian Gong, Daniel R. Harbeck, Emily Hunting, Kurt P. Jaehnig, Ming Liang, Sarah E. Logsdon, et al. "The NEID precision radial velocity spectrometer: fast, first-order wavefront correction." In Ground-based and Airborne Instrumentation for Astronomy VII, edited by Hideki Takami, Christopher J. Evans, and Luc Simard. SPIE, 2018. http://dx.doi.org/10.1117/12.2313433.

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Halverson, Samuel, Ryan Terrien, Suvrath Mahadevan, Arpita Roy, Chad Bender, Gudmundur K. Stefánsson, Andrew Monson, et al. "A comprehensive radial velocity error budget for next generation Doppler spectrometers." In SPIE Astronomical Telescopes + Instrumentation, edited by Christopher J. Evans, Luc Simard, and Hideki Takami. SPIE, 2016. http://dx.doi.org/10.1117/12.2232761.

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Prieto, Carlos Allende, and Coryn A. L. Bailer-Jones. "Stellar Atmospheric Parameters: The Four-Step Program and Gaia’s Radial Velocity Spectrometer." In CLASSIFICATION AND DISCOVERY IN LARGE ASTRONOMICAL SURVEYS: Proceedings of the International Conference: “Classification and Discovery in Large Astronomical Surveys”. AIP, 2008. http://dx.doi.org/10.1063/1.3059081.

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Reports on the topic "Velocity spectrometry"

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Hill, K., M. Bitter, S. Scott, A. Ince-Cushman, M. Reinke, J. Rice, P. Beiersdorfer, et al. A Spatially Resolving X-ray Crystal Spectrometer for Measurement of Ion-temperature and Rotation-velocity Profiles on the AlcatorC-Mod Tokamak. Office of Scientific and Technical Information (OSTI), March 2009. http://dx.doi.org/10.2172/951311.

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Hill, K., L. Delgado-Aparico, David Johnson, R. Feder, P. Beiersdorfer, James Dunn, K. Morris, et al. Development Of a Spatially Resolving X-ray Crystal Spectrometer For Measurement Of Ion-temperature (Ti) And Rotation-velocity (v) Profiles in ITER. Office of Scientific and Technical Information (OSTI), December 2010. http://dx.doi.org/10.2172/1001672.

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Hill, K. W., L. Delgado-Aprico, D. Johnson, R. Feder, Beiersdorfer, J. Dunn, K. Morris, et al. Development of a Spatially Resolving X-Ray Crystal Spectrometer (XCS) for Measurement of Ion-Temperature (Ti) and Rotation-Velocity (v) Profiles in ITER. Office of Scientific and Technical Information (OSTI), May 2010. http://dx.doi.org/10.2172/981711.

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Hill, K. W., Ch Broennimann, E. F. Eikenberry, A. Ince-Cushman, S. G. Lee, J. E. Rice, and S. Scott. Development of a High Resolution X-Ray Imaging Crystal Spectrometer for Measurement of Ion-Temperature and Rotation-Velocity Profiles in Fusion Energy Research Plasmas. Office of Scientific and Technical Information (OSTI), February 2008. http://dx.doi.org/10.2172/960230.

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Hill, K., Ch Broennimann, E. Eikenberry, A. Ince-Cushman, S. Lee, J. Rice, S. Scott, and R. Barnsley. Development of a High Resolution X-Ray Imaging Crystal Spectrometer for Measurement of Ion-Temperature and Rotation-Velocity Profiles in Fusion Energy Research Plasmas. Office of Scientific and Technical Information (OSTI), January 2008. http://dx.doi.org/10.2172/960413.

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