Log in

Relevant bibliographies by topics / Atomes neutres

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Atomes neutres'

Author: Grafiati

Published: 25 May 2024

Last updated: 15 March 2025

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 'Atomes neutres.'

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 "Atomes neutres"

1

Atiyah, M. F., and N. S. Manton. "Complex geometry of nuclei and atoms." International Journal of Modern Physics A 33, no. 24 (2018): 1830022. http://dx.doi.org/10.1142/s0217751x18300223.

Full text

Abstract:

We propose a new geometrical model of matter, in which neutral atoms are modelled by compact, complex algebraic surfaces. Proton and neutron numbers are determined by a surface’s Chern numbers. Equivalently, they are determined by combinations of the Hodge numbers, or the Betti numbers. Geometrical constraints on algebraic surfaces allow just a finite range of neutron numbers for a given proton number. This range encompasses the known isotopes.

APA, Harvard, Vancouver, ISO, and other styles

2

Kirichenko, A. N., A. V. Krasilnikov, N. B. Rodionov, et al. "Spectrometers of Neutrons and Fast Atoms of Tokamak Thermonuclear Plasma Based on CVD Synthesized Diamond Single-Crystal Films." Fizika plazmy 50, no. 4 (2024): 484–90. http://dx.doi.org/10.31857/s0367292124040082.

Full text

Abstract:

High radiation resistance, chemical inertness, the ability to operate at elevated temperatures, high mobility and efficiency of charge-carrier collection are important properties of diamond for designing detectors and spectrometers of ionizing radiation. Currently, diagnostics of neutrons and neutral particle fluxes based on diamond detectors for the ITER thermonuclear reactor are justified and developed. This work presents the results of a Raman spectroscopy and photoluminescence spectroscopy study of the electronic quality of synthesized epitaxial diamond films obtained by vapor deposition i

APA, Harvard, Vancouver, ISO, and other styles

3

Naghiyev, T. G. "Neutron-alpha reactions in nano α-Si3N4 particles by neutrons". Modern Physics Letters A 36, № 24 (2021): 2150181. http://dx.doi.org/10.1142/s0217732321501819.

Full text

Abstract:

Computer modeling was applied to the study of [Formula: see text] transmutations in [Formula: see text] nanoparticles under the influence of neutrons at different energies. The modeling was separately performed for each Si and N atoms in the [Formula: see text] nanoparticles and the effect of neutrons on transmutations was investigated. The simulations were conducted individually for each stable isotope due to different effective cross-section of the probability of transmutation in the different types of isotopes of silicon and nitrogen atoms. Effective cross-section spectra of [Formula: see t

APA, Harvard, Vancouver, ISO, and other styles

4

Mason, T. E., and A. D. Taylor. "Neutron Scattering in Materials Research." MRS Bulletin 24, no. 12 (1999): 14–16. http://dx.doi.org/10.1557/s0883769400053665.

Full text

Abstract:

With materials of ever-increasing complexity becoming key elements of the technologies underpinning industrial and economic development, there is an ongoing need for tools that reveal the microscopic origins of physical, electrical, magnetic, chemical, and biological properties. Neutron scattering is one such powerful tool for the study of the structure and dynamics of materials. Neutrons are well suited to this purpose for several reasons:∎ Neutrons are electrically neutral, leading to penetration depths of centimeters and thereby enabling in situ studies.∎ Neutron cross sections exhibit no r

APA, Harvard, Vancouver, ISO, and other styles

5

Monti, V., M. Costa, E. Durisi, et al. "Neutron spectroscopy for Boron Neutron Capture Therapy beams characterization." Journal of Instrumentation 19, no. 05 (2024): C05036. http://dx.doi.org/10.1088/1748-0221/19/05/c05036.

Full text

Abstract:

Abstract Boron Neutron Capture Therapy (BNCT) is a therapeutic treatment for malignant tumors that utilizes the nuclear reactions that happen when thermal neutrons are captured by boron-10 atoms to selectively destroy designated cells. Boron-10 atoms are biochemically accumulated inside the tumor target, which is then irradiated with thermal neutrons. In recent years, the possibility to obtain accelerator based intense neutron beams has given a boost to the diffusion of BNCT also in Europe, removing the need of nuclear reactors. In this contest, the monitoring and characterization of the epith

APA, Harvard, Vancouver, ISO, and other styles

6

Morris, Elizabeth M., and J. David Cooper. "Density measurements in ice boreholes using neutron scattering." Journal of Glaciology 49, no. 167 (2003): 599–604. http://dx.doi.org/10.3189/172756503781830403.

Full text

Abstract:

AbstractThis paper describes the use of a neutron probe to measure detailed stratigraphy in ice and snow. The Wallingford neutron probe, developed for measurement of soil moisture, consists of an annular radioactive source of fast neutrons around the centre of a cylindrical detector for slow (thermal) neutrons. In snow and ice, the fast neutrons lose energy by scattering from hydrogen atoms, and the number of slow neutrons arriving at the detector (the count rate) is related to the density of the medium. Calibration equations for count rate as a function of snow density and borehole diameter h

APA, Harvard, Vancouver, ISO, and other styles

7

Roberts, Joyce A. "The Manuel Lujan Jr. Neutron Scattering Center." MRS Bulletin 22, no. 9 (1997): 42–46. http://dx.doi.org/10.1557/s0883769400033996.

Full text

Abstract:

In October 1986, the neutron scattering facility at Los Alamos National Laboratory became a national user facility and a formal user program was initiated in 1988. In July 1989, this facility was dedicated as the Manuel Lujan Jr. Neutron Scattering Center (Lujan Center) in honor of the long-term Congress representative from New Mexico. The Lujan Center, part of the Los Alamos Neutron Science Center (LANSCE), is a pulsed spallation neutron source equipped with time-of-flight neutron-scattering spectrometers for condensed-matter research. Neutron scattering is a powerful technique for probing th

APA, Harvard, Vancouver, ISO, and other styles

8

Dlougach, Eugenia, Mikhail Shlenskii, and Boris Kuteev. "Neutral Beams for Neutron Generation in Fusion Neutron Sources." Atoms 10, no. 4 (2022): 143. http://dx.doi.org/10.3390/atoms10040143.

Full text

Abstract:

Neutral beam injection is supposed to be the main source of high-energy particles, driving non-inductive current and generating primary neutrons in fusion neutron sources design based on tokamaks. Numerical simulation of high-energy particles’ thermalization in plasma and fusion neutron emission is calculated by novel dedicated software (NESTOR code). The neutral beam is reproduced statistically by up to 109 injected particles. The beam efficiency and contribution to primary neutron generation is shown to be dependent on the injection energy, input current, and plasma temperature profile. A be

APA, Harvard, Vancouver, ISO, and other styles

9

Pylypchuk, Ie V., V. O. Kovach, Anna V. Iatsyshyn, O. V. Farrakhov, V. N. Bliznyuk, and V. O. Kutsenko. "Immobilization of boronic acid derivative onto the magnetic Gd-containing composites." IOP Conference Series: Earth and Environmental Science 1049, no. 1 (2022): 012014. http://dx.doi.org/10.1088/1755-1315/1049/1/012014.

Full text

Abstract:

Abstract Aiming to develop new magnetic materials for neutron shielding applications, B- and Gd-containing magnetic nanoparticles were synthesized. Following bottom-up synthetic approach, core-shell Fe 3 O 4/Gd 2 O 3 nanocomposite particles were synthesized at the first stage. In the next stage, magnetic core-shell particles were modified with amino groups followed by grafting onto their surface of the boronic acid derivative. Such a multifunctional material, containing both boron (B) and gadolinium (Gd) atoms is a promising candidate for developing films and membranes, strongly interacting wi

APA, Harvard, Vancouver, ISO, and other styles

10

Liebschner, Dorothee, Pavel V. Afonine, Nigel W. Moriarty, Paul Langan, and Paul D. Adams. "Evaluation of models determined by neutron diffraction and proposed improvements to their validation and deposition." Acta Crystallographica Section D Structural Biology 74, no. 8 (2018): 800–813. http://dx.doi.org/10.1107/s2059798318004588.

Full text

Abstract:

The Protein Data Bank (PDB) contains a growing number of models that have been determined using neutron diffraction or a hybrid method that combines X-ray and neutron diffraction. The advantage of neutron diffraction experiments is that the positions of all atoms can be determined, including H atoms, which are hardly detectable by X-ray diffraction. This allows the determination of protonation states and the assignment of H atoms to water molecules. Because neutrons are scattered differently by hydrogen and its isotope deuterium, neutron diffraction in combination with H/D exchange can provide

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Atomes neutres"

1

Schlosser, Nicolas. "Etude et réalisation de micro-pièges dipolaires optiques pour atomes neutres." Phd thesis, Université Paris Sud - Paris XI, 2001. http://tel.archives-ouvertes.fr/tel-00001195.

Full text

Abstract:

Les atomes neutres piégés sont des candidats potentiels pour<br />l'implémentation de portes logiques quantiques. Dans ce contexte, cette étude<br />porte sur la réalisation d'un piège dipolaire optique de si petite taille qu'il<br />ne puisse contenir qu'un atome unique. Pour cela, il est nécessaire de<br />focaliser très fortement un laser à l'endroit où l'on désire capturer les<br />atomes. L'expérience s'articule donc autour d'un objectif de microscope de<br />grande ouverture numérique, entièrement conçu et réalisé au laboratoire. Cette<br />optique est utilisée pour faire focaliser un la

APA, Harvard, Vancouver, ISO, and other styles

2

Beugnon, Jérôme. "Contrôle de l'état interne d'un atome unique piégé et expériences d'interférences à deux photons : vers l'information quantique avec des atomes neutres." Phd thesis, Université Paris Sud - Paris XI, 2007. http://tel.archives-ouvertes.fr/tel-00185446.

Full text

Abstract:

Les atomes neutres sont de bons candidats pour la réalisation de protocoles d'information quantique. Cette thèse présente des expériences effectuées dans cette perspective sur des atomes individuels de rubidium piégés dans des pinces optiques de taille microscopique. Ces pinces sont obtenues en focalisant un faisceau laser sur une taille inférieure à un micromètre. Nous montrons que l'on peut contrôler l'état de chaque atome individuellement en faisant des transitions Raman à deux photons entre deux niveaux hyperfins de l'état fondamental. Nous observons des oscillations de Rabi entre ces deux

APA, Harvard, Vancouver, ISO, and other styles

3

Beugnon, Jérôme. "Contrôle de l'état interne d'un atome unique piégé et expériences d'interférences à deux photons : vers l'information quantique avec des atomes neutres." Phd thesis, Paris 11, 2007. http://www.theses.fr/2007PA112314.

Full text

Abstract:

Les atomes neutres sont de bons candidats pour la réalisation de protocoles d'information quantique. Cette thèse présente des expériences effectuées dans cette perspective sur des atomes individuels de rubidium piégés dans des pinces optiques de taille microscopique. Ces pinces sont obtenues en focalisant un faisceau laser sur une taille inférieure à un micromètre. Nous montrons que l'on peut contrôler l'état de chaque atome individuellement en faisant des transitions Raman à deux photons entre deux niveaux hyperfins de l'état fondamental. Nous observons des oscillations de Rabi entre ces deux

APA, Harvard, Vancouver, ISO, and other styles

4

Kara, Abdelkader. "Contribution à l'étude expérimentale et théorique de la diffusion élastique d'atomes neutres par des surfaces périodiques et des surfaces avec des défauts isolés." Lille 1, 1985. http://www.theses.fr/1985LIL10031.

Full text

Abstract:

L'étude expérimentale des surfaces de Cu par diffraction d'hélium à basse énergie permet de déterminer un potentiel d'interaction atome-surface. On peut déterminer la densité électronique en surface. Développement d'un formalisme de diffusion d'atomes neutres par les surfaces avec défauts isolés. La solution exacte est décrite sous forme de série de perturbation. En prenant une distribution aléatoire de défauts, les sections efficaces de diffusion calculées au 2ème ordre de perturbation pour des lacunes sur Cu(100) et Cu(110) et des atomes d'hydrogène adsorbés sur Cu(110) sont comparables a ce

APA, Harvard, Vancouver, ISO, and other styles

5

Kissami, Abdelhamid. "Etude des sections efficaces d'excitation (desexcitation) et des profils des raies par des atomes neutres et ionises." Orléans, 1990. http://www.theses.fr/1990ORLE2030.

Full text

Abstract:

Le travail entrepris a consiste en la realisation d'un programme numerique capable de calculer le profil des raies spectrales dans les plasmas, dans le cadre de l'approximation semi classique. Afin d'atteindre cet objectif plusieurs etapes ont ete franchies. La premiere consiste a calculer les sections efficaces d'excitation et desexcitation puis d'integrer l'ensemble sur une distribution maxwellienne dans l'espace des vitesses. La seconde etape a trait au calcul de la partie atomique du profil de raie (force de raie), qui est obtenue a partir d'une nouvelle technique fondee sur l'approximatio

APA, Harvard, Vancouver, ISO, and other styles

6

Jandura, Sven. "Optimized quantum gates for neutral atom quantum computers." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAF027.

Full text

Abstract:

Les atomes neutres sont récemment apparus comme une plate-forme compétitive pour l'informatique quantique. Le développement de portes quantiques intriquées de haute délité est la clé du succès de cette plateforme. Dans cette thèse, nous développons plusieurs protocoles nouveaux et optimisés pour l'implémentation de portes quantiques à deux et plusieurs qubits sur des atomes neutres. Nous introduisons la famille des protocoles temps-optimaux, qui implémentent une porte quantique donnée aussi rapidement que possible en appliquant une impulsion laser unique avec une phase dépendant du temps. Nous

APA, Harvard, Vancouver, ISO, and other styles

7

Loisel, Jean-Philippe. "Réalisation de sources lasers à l'état solide et observation du phénomène LIAD : application au développement d'une horloge optique à atomes neutres d'argent." Versailles-St Quentin en Yvelines, 2010. http://www.theses.fr/2010VERS0062.

Full text

Abstract:

Les possibilités remarquables offertes par les techniques de refroidissement laser et de piégeage ont permis des avancées significatives dans le domaine des standards de fréquence à base d'atomes neutres. Parmi les différents systèmes permettant d'accéder à des valeurs de stabilité et précision élevés, l'atome d'argent est considéré comme l'un des candidats les plus prometteurs comme standard optique de fréquence. Cette thèse traite du développement d'une horloge basée sur des atomes neutres d'Ag. La transition 4d105s2 S1/2 > 4d95s2 2D5/2 dans l'Argent peut fournir une référence de fréquenc

APA, Harvard, Vancouver, ISO, and other styles

8

Petitjean, Luc. "Étude théorique et expérimentale des collisions entre atomes de Rydberg et cibles neutres (atomique ou moléculaire) à énergie thermique : transferts résonnants d'énergie interne." Paris 11, 1985. http://www.theses.fr/1985PA112108.

Full text

Abstract:

Cette thèse reporte une étude des propriétés collisionnelles des atomes de Rydberg avec des cibles neutres (atomique ou moléculaire). Ces collisions sont décrites dans le cadre de l'Approximation d'Impact (AI). Des méthodes permettant l'évaluation du facteur de forme de la transition atomique, étape clé dans le calcul d'une section efficace, sont proposées et discutées. Celles-ci autorisent de nombreuses confrontations avec les résultats expérimentaux. Les sections efficaces de dépeuplement total d'états de Rydberg du rubidium par des perturbateurs moléculaires (N2, CO, NH₃, ND₃) sont mesurées

APA, Harvard, Vancouver, ISO, and other styles

9

Haas, Florian. "Creation of entangled states of a set of atoms in an optical cavity." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-00968861.

Full text

Abstract:

In this thesis, we demonstrate the creation and characterization of multiparticle entangled states of neutral atoms with the help of a high finesse cavity. Our experimental setup consists of a fibre-based high finesse cavity above the surface of an atom chip. It allows us to prepare an ensemble of 87Rb atoms with well-defined atom number. The atoms are trapped in a single antinode of an intracavity standing wave dipole trap and are therefore all equally coupled to the cavity mode. We present a scheme based on a collective, quantum non-destructive (QND) measurement and conditional evolution to

APA, Harvard, Vancouver, ISO, and other styles

10

Dalyac, Constantin. "Quantum many-body dynamics for combinatorial optimisation and machine learning." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS275.

Full text

Abstract:

L'objectif de cette thèse est d'explorer et de qualifier l'utilisation de la dynamique quantique à N-corps pour résoudre des problèmes industriels difficiles et des tâches d'apprentissage automatique. En tant que collaboration entre des partenaires industriels et universitaires, cette thèse explore les capacités d'un dispositif à atome neutre pour résoudre des problèmes réels. Tout d'abord, nous examinons les problèmes d'optimisation combinatoire et montrons comment les atomes neutres peuvent naturellement encoder un célèbre problème d'optimisation combinatoire appelé le "Maximum Independent S

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Atomes neutres"

1

1964-, Newbury Nathan, Wieman C. E, and American Association of Physics Teachers., eds. Trapping of neutral atoms. American Association of Physics Teachers, 1998.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

P, Ozerov Ruslan, ed. Magnetic Neutron Diffraction. Springer US, 1995.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Smarandache, Florentin. Neutrosophic physics: More problems, more solutions, collection of papers. North-European Scientific Publishers, 2010.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Mohd Nor bin Md Yusuf. The interaction of fast neutral atoms with metal surfaces. typescript, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Janot, Christian, Winfried Petry, Dieter Richter, and Tasso Springer, eds. Atomic Transport and Defects in Metals by Neutron Scattering. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71007-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

DeLay, Glen Clark. Neutron placement with proton and positon. DeLay's Printing, 2004.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

United States. National Aeronautics and Space Administration., ed. Surface conversion techniques for low energy neutral atom imagers: Final report. National Aeronautics and Space Administration, 1995.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Agency, International Atomic Energy, ed. Neutron reflectometry: A probe for materials surfaces : proceedings of a technical meeting organized by the International Atomic Energy Agency and held in Vienna, 16-20 August 2004. International Atomic Energy Agency, 2006.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Civiš, Svatopluk, Ekaterina Zanozina, Adam Pastorek, Petr Kubelík, Martin Ferus, and Ashok Chilukoti. Atomic Emission Spectra of Neutral Noble Gases in the Infrared Spectral Range. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47352-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Conference on Neutron Scattering in the 'Nineties (1985 Jülich, Germany). Neutron scattering in the 'nineties: Proceedings of a conference ... organized by the International Atomic Energy Agency in cooperation with the Jülich Nuclear Research Centre and held in Jülich, 14-18 January 1985. IAEA, 1985.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Atomes neutres"

1

Averyn, Viktar S. "Short Refresher of Radiobiology." In Nuclear and Radiological Emergencies in Animal Production Systems, Preparedness, Response and Recovery. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-63021-1_2.

Full text

Abstract:

AbstractThe atoms are built up of a nucleus, containing positive (protons) and neutral (neutrons) particles, surrounded by negative particles (electrons), circulating around the “atomic orbit”. The number of the protons in the nucleus is giving the atomic number of the element (usually labelled as “Z”), and the sum of the neutrons and protons in the nucleus is giving the atomic or mass number of the element (usually labelled as “A”). The number in the electrons in the atomic orbit is always equal to the number of protons in the nucleus. However, as the mass of the electrons is almost equal to zero, they do not influence the whole atomic mass.

APA, Harvard, Vancouver, ISO, and other styles

2

Raven, Will. "Isotope Shifts, Radioactive Decay, and the Nuclear Forces." In Atomic Physics for Everyone. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-69507-0_10.

Full text

Abstract:

AbstractIn this chapter, we explore the nucleus, focusing on how the number of neutrons in a nucleus influences transition frequencies and the stability of atoms. We begin by examining the effect of neutrons on transition frequencies, then shift into detailed discussions of the nuclear forces and principles governing atomic stability and radioactive decay. Various modes of radioactive decay, including neutron and proton emission, $$\alpha $$ α decay, spontaneous fission, $$\beta ^-$$ β − decay, $$\beta ^+$$ β + decay, and electron capture, are investigated, with an emphasis on the conditions under which each occurs. Additionally, we explore the nuclear shell model to understand the energetics behind different types of decays and the stability of isotopes.

APA, Harvard, Vancouver, ISO, and other styles

3

Michaud, Georges, Georges Alecian, and Jacques Richer. "Neutron Stars." In Atomic Diffusion in Stars. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19854-5_14.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Radzig, Alexandre A., and Boris M. Smirnov. "Energetics of Neutral Atoms." In Springer Series in Chemical Physics. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82048-9_5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Vorburger, A., and P. Wurz. "Lunar Atmosphere, Energetic Neutral Atoms." In Encyclopedia of Lunar Science. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-05546-6_221-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Missimer, J. "Neutral Currents in Muonic Atoms." In Fundamental Interactions in Low-Energy Systems. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-4967-9_7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Vorburger, A., and P. Wurz. "Lunar Atmosphere, Energetic Neutral Atoms." In Encyclopedia of Lunar Science. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-319-14541-9_221.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Radzig, Alexandre A., and Boris M. Smirnov. "Spectroscopic Characteristics of Neutral Atoms." In Springer Series in Chemical Physics. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82048-9_7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Aspect, Alain. "Laser Manipulation of Neutral Atoms." In NATO ASI Series. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-1576-4_9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Metcalf, Harold J., and Peter van der Straten. "Magnetic Trapping of Neutral Atoms." In Graduate Texts in Contemporary Physics. Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1470-0_10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Atomes neutres"

1

Balewski, Jan, Milan Kornjača, Katherine Klymko, et al. "Engineering Quantum States with Neutral Atoms." In 2024 IEEE International Conference on Quantum Computing and Engineering (QCE). IEEE, 2024. https://doi.org/10.1109/qce60285.2024.00144.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Bergeman, Thomas, and Harold Metcalf. "Magnetic trapping of neutral atoms." In International Laser Science Conference. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/ils.1986.wf6.

Full text

Abstract:

Magnetic trapping of laser-cooled neutral atoms has been demonstrated at NBS and is progressing in other laboratories. Confinement of any object requires exchanging kinetic for potential energy, and for neutral atoms, this necessarily derives from shifts of internal energy levels. This is implemented through the force experienced by the atomic magnetic moment in a carefully designed, highly inhomogeneous field. Since magnetic fields of convenient strength can shift atomic energy levels by only a few gigahertz (temperature ≌ 0.1 K), neutral atom traps are very shallow and must be loaded with ve

APA, Harvard, Vancouver, ISO, and other styles

3

Chu, Steven, Mark Kasevich, Kathryn Moler, Erling Riis, and David Weiss. "Future of neutral atom clocks." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.wh1.

Full text

Abstract:

The measurement on energy levels suitable for time standards can be made more precise with the use of neutral atom manipulation techniques. We have created a fountain of atoms where the measurement time of atoms in ballistic free-fall can be on the order of a fraction of a second. With these long measurement times, the linewidth of the transition between the ground state hyperfine transition of sodium was measured to be 2 Hz. Transitions in the optical frequency range could then have Q's of 1014 to 1015. In addition to creating high Q resonances, it is desirable to have a continuous, high dens

APA, Harvard, Vancouver, ISO, and other styles

4

Oates, Chris, Zeb Barber, Jason Stalnaker, Chad Hoyt, Yann Le Coq, and Leo Hollberg. "Optical Atomic Clocks Based Upon Neutral Atoms." In Laser Science. OSA, 2007. http://dx.doi.org/10.1364/ls.2007.ltuh3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Ketterle, Wolfgang. "Recent Advances in Bose-Einstein Condensation." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.plen1.

Full text

Abstract:

The observation of Bose-Einstein condensation (BEC) in dilute atomic gases was the realization of many long-standing goals: (1) to cool neutral atoms into the ground state of the system, thus exerting ultimate control over the motion and position of atoms limited only by Heisenberg's uncertainty relation; (2) to generate a coherent sample of atoms all occupying the same quantum state (this was subsequently used to realize an atom laser, a device which generates coherent matter waves); and (3) to create a quantum fluid with properties quite different from the quantum liquids He-3 and He-4. This

APA, Harvard, Vancouver, ISO, and other styles

6

Ido, T., M. M. Boyd, A. D. Ludlow, et al. "Optical atomic clocks based on ultracold neutral strontium atoms." In International Quantum Electronics Conference, 2005. IEEE, 2005. http://dx.doi.org/10.1109/iqec.2005.1561161.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Phillips, William D. "Laser cooling, stopping, and magnetic trapping of neutral atoms." In OSA Annual Meeting. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.wv3.

Full text

Abstract:

A thermal atomic Na beam is opposed by a resonantly tuned laser beam. The radiation pressure decelerates and compresses the thermal velocity distribution, bringing the average velocity to zero and reducing the width from ~1000 m/s to a few tens of m/s or less.1 The density of stopped atoms is > 106/cm3 within a bandwidth of a few m/ s. These densities and velocities are suitable for trapping by a number of proposed optical and magnetic traps. Using these stopped atoms, we have demonstrated the first electromagnetic trapping of neutral atoms. The trap, a magnetic quadrupole formed by two sep

APA, Harvard, Vancouver, ISO, and other styles

8

Maruyama, Ippei, Osamu Kontani, Shohei Sawada, Osamu Sato, Go Igarashi, and Masayuki Takizawa. "Evaluation of Irradiation Effects on Concrete Structure: Background and Preparation of Neutron Irradiation Test." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98114.

Full text

Abstract:

Methods for assessing the soundness of concrete exposed to irradiation are being developed within the framework of a project of the Nuclear Regulation Authority (NRA) “Japan Ageing Management Program for System Safety”. This paper presents the background of this project and recent research works. The major reason for deterioration of concrete under irradiation conditions is expansion of aggregate due to neutron and gamma-ray irradiation. Dislocation of atoms in covalent structures of aggregate minerals, and resultant lattice constant change and alteration to amorphous phase are produced by fas

APA, Harvard, Vancouver, ISO, and other styles

9

Holmgren, D. E., and D. F. Prelewitz. "Sodium core-excited fluorescence enhancement by charge transfer." In OSA Annual Meeting. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.thpo19.

Full text

Abstract:

We have demonstrated a technique which enhances emission lines of core-excited Na transitions occurring in a hollow-cathode discharge. The technique should apply to other alkali atoms and could help in identifying the core-excited visible spectra of heavier alkali atoms. In our experiment, stored population is produced by the discharge in the Na-ion metastable level 2p53s J = 2. A pulsed dye laser is used to transfer this population to a higher ion level of the 2p53p configuration. Core-excited neutral atoms are subsequently produced by an exothermic charge transfer from ground neutrals to the

APA, Harvard, Vancouver, ISO, and other styles

10

Yanli, Xiong, Qiu Xiaopeng, Liu Shuhuan, et al. "Simulation and Analysis of 4H-SiC-Based PiN Fast Neutron Detector With Polyethylene Converter Using Geant4." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-92268.

Full text

Abstract:

Abstract When detecting fast neutrons, generally select materials with high hydrogen content, such as polyethylene and lithium hydride. It’s known that polyethylene is widely used and has high detect efficiency. Therefore, this paper uses Geant4 software to simulate 4H-SiC-based PiN fast neutron detector with polyethylene converter of varies thickness. With the increase of converter thickness, the conversion efficiency of 1–14MeV monoenergetic fast neutron will first increase and then decrease. By analysing the trend of conversion efficiency, the thickness is determined as 1000um. Then, the 1M

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Atomes neutres"

1

Ків, Арнольд Юхимович, Володимир Миколайович Соловйов та Sergey A. Tomilin. Formation of Si precipitates іn neutron irradiated Al. Видавничий відділ КДПУ, 2001. http://dx.doi.org/10.31812/0564/1027.

Full text

Abstract:

Transmutation reactions are the unique way to get a large concentration of Silicon atoms in Aluminum lattice, and just in substitutional positions. Appearing Silicon atoms in Aluminum lattice instead of Aluminum atoms leads to arising of mechanical stresses. This factor is the keystone of the model, which allows to explain the main peculiarities of Si precipitate creation in Aluminum irradiated by thermal neutrons. First, we shall describe the qualitative peculiarities of the model. Then we shall perform some quantitative estimates. At last the model will be discussed and compared with experim

APA, Harvard, Vancouver, ISO, and other styles

2

Holden, T., J. Root, and R. Hosbons. CWI1988-Andi-12 Neutron Diffraction of Axial Residual Strains in the Vicinity of a Girth Weld. Pipeline Research Council International, Inc. (PRCI), 1988. http://dx.doi.org/10.55274/r0011390.

Full text

Abstract:

Recent research has shown that neutron diffraction is a practical non-destructive method for determining residual strains in the vicinity of a girth weld in line pipe. The basis of the technique is that the distance between planes of atoms is used as a miniature, directional, internal strain gauge, just as for X-ray measurements. However, the penetration of neutrons into metals ls from 1000 to 10,000 times greater than that of X-rays, so that measurements may easily be made throughout the thickness of steel pipe including the region of the weld itself. The purpose of the present measurements w

APA, Harvard, Vancouver, ISO, and other styles

3

Hill, C. Summary Report of the Third Research Coordination Meeting on Data for Atomic Processes of Neutral Beams in Fusion Plasma. IAEA Nuclear Data Section, 2022. http://dx.doi.org/10.61092/iaea.twqe-92hz.

Full text

Abstract:

10 experts in the field of atomic collisional physics and neutral beam modelling for magnetic confinement fusion devices, together with IAEA Staff met online from 24 – 26 November 2021 for the Third Research Coordination Meeting of the IAEA Coordinated Research Project (CRP) F43023: Data for Atomic Processes of Neutral Beams in Fusion Plasma. They described progress since the previous project meeting in February 2019, discussed open issues and reviewed the coordinated research and code comparison activities conducted as part of the CRP. The proceedings of the meeting are summarized in this rep

APA, Harvard, Vancouver, ISO, and other styles

4

Hill, Christian. Data for Atomic Processes of Neutral Beams in Fusion Plasma. IAEA Nuclear Data Section, 2019. http://dx.doi.org/10.61092/iaea.19hv-wzn5.

Full text

Abstract:

12 experts in the field of atomic collisional physics and neutral beam modelling for magnetic confinement fusion devices, together with IAEA staff met at IAEA Headquarters 19 – 21 February 2019 for the Second Research Coordination Meeting of an IAEA Coordinated Research Project on Data for Atomic Processes of Neutral Beams in Fusion Plasma. They described progress with their research since the previous project meeting in June 2017, discussed open issues and made plans for continued coordinated research and code comparison during the remaining years of the project. The proceedings of the meetin

APA, Harvard, Vancouver, ISO, and other styles

5

Pritchard, David E., and Wolfgang Ketterle. Experiments with Trapped Neutral Atoms. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada306690.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Ketterle, Wolfgang. Experiments With Trapped Neutral Atoms. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada514076.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Ketterle, Wolfgang. Experiments with Trapped Neutral Atoms. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada381427.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Saffman, Mark, and Thad Walker. Quantum Logic With Cold Neutral Atoms. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada454801.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lee, Jongmin, Michael J. Martin, Yuan-Yu Jau, Ivan H. Deutsch, and Grant W. Biedermann. A new approach to entangling neutral atoms. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1333520.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Phillips, William D. Laser Cooling and Trapping of Neutral Atoms. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada253537.

Full text

APA, Harvard, Vancouver, ISO, and other styles

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!