Thematische Bibliographien / Atomic pair

Inhaltsverzeichnis

  1. Zeitschriftenartikel
  2. Dissertationen
  3. Bücher
  4. Buchteile
  5. Konferenzberichte
  6. Berichte der Organisationen

Auswahl der wissenschaftlichen Literatur zum Thema „Atomic pair“

Autor: Grafiati
Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "Atomic pair"

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YONEDA, Yasuhiro. „Atomic Pair Distribution Function (PDF) Analysis of Ferroelectric Materials“. Nihon Kessho Gakkaishi 54, Nr. 3 (2012): 155–58. http://dx.doi.org/10.5940/jcrsj.54.155.

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Volz, Jürgen, Xinxin Hu, Gabriele Maron, Luke Masters, Lucas Pache und Arno Rauschenbeutel. „Single atom photon pair source“. EPJ Web of Conferences 266 (2022): 08016. http://dx.doi.org/10.1051/epjconf/202226608016.

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Sources of entangled photon pairs are a crucial ingredient for many applications in quantum information and communication. Of particular interest are narrow-band sources with bandwidths that are compatible with solid state systems such as atomic media for storage and manipulation of the photons. Here, we experimentally realize a source of energy-time entangled photon pairs where the photons pairs are generated by scattering light from a single two-level atom and separated from the coherently scattered light via a narrow-band filter. We verify the performance of our pair-source by measuring the second order correlation function of the atomic fluorescence and we observe that one can continuously tune the photon statistics of the atomic fluorescence from perfect photon anti-bunching to strong photon bunching expected for a photon pair source. Our experiment demonstrates a novel way to realize a photon pair source for photons with spectral bandwidths and resonance frequencies that are inherently compatible with atomic media.
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FULDE, P. „COOPER PAIR BREAKING“. Modern Physics Letters B 24, Nr. 26 (20.10.2010): 2601–24. http://dx.doi.org/10.1142/s021798491002519x.

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An overview is given of a number of pair-breaking interactions in superconductors. They have in common that they violate a symmetry of the pair state. In most cases pairs are formed from time reversed single-particle states, a noticeable exception being antiferromagnetic superconductors. When time reversibility is broken by an interaction acting on the electrons, the time evolution of the time-reversal operator plays an important role. Depending on whether it is nonergodic or ergodic, we deal with pair weakening or pair breaking. Numerous different interactions are analyzed and discussed. Unifying features of different pair-breaking cases are pointed out. Special attention is paid to the Zeeman effect and to scattering centers with low-energy excitations. The Kondo effect and crystalline field split rare-earth ions belong in that category. Modifications caused by strongly anisotropic pair states are pointed out. There is strong evidence that in some cases intra-atomic excitations lead to pair formation rather than pair breaking for which an explanation is provided.
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Shamoto, S., K. Kodama, S. Iikubo und T. Taguchi. „Atomic pair distribution function analysis on nanomaterials“. Acta Crystallographica Section A Foundations of Crystallography 64, a1 (23.08.2008): C73—C74. http://dx.doi.org/10.1107/s0108767308097651.

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5

Rosenberg, Leonard. „Virtual-pair effects in atomic structure theory“. Physical Review A 39, Nr. 9 (01.05.1989): 4377–86. http://dx.doi.org/10.1103/physreva.39.4377.

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Dzero, M., E. A. Yuzbashyan und B. L. Altshuler. „Cooper pair turbulence in atomic Fermi gases“. EPL (Europhysics Letters) 85, Nr. 2 (Januar 2009): 20004. http://dx.doi.org/10.1209/0295-5075/85/20004.

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7

Belkacem, Ali, und Allan H. Sørensen. „The pair-production channel in atomic processes“. Radiation Physics and Chemistry 75, Nr. 6 (Juni 2006): 656–95. http://dx.doi.org/10.1016/j.radphyschem.2005.03.003.

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Petkov, V. „Atomic-scale structure of nanocrystals by the atomic pair distribution function technique“. Molecular Simulation 31, Nr. 2-3 (15.02.2005): 101–5. http://dx.doi.org/10.1080/08927020412331308485.

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Vitek, V. „Pair Potentials in Atomistic Computer Simulations“. MRS Bulletin 21, Nr. 2 (Februar 1996): 20–23. http://dx.doi.org/10.1557/s088376940004625x.

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Computer modeling of crystal defects ranges at present from generic empirical investigations to first-principle quantum-mechanical calculations (see, for example, References 1–4). Descriptions of atomic interactions in terms of pair potentials dominated such studies until the early 1980s, and many fundamental features of lattice defects and interfaces were revealed in these calculations. The generic results of these studies withstood the test of time, and calculations employing more sophisticated schemes usually confirmed their validity. An early example goes back to the late 1950s when Vineyard and co-workers pioneered the very first computer simulations in their studies of radiation damage. Empirical pair potentials were used in these investigations in which many fundamental, generic aspects of the effect of irradiation of crystalline materials by energetic particles were discovered.Such simple treatments of atomic interactions may appear totally inadequate from the point of view of pure physics. However, it must be recognized that the purpose of the majority of atomistic studies of lattice defects has been to elucidate atomic structure and atomic-level properties in materials with given: (a) crystal structure, (b) elastic properties and possibly phonon spectra, (c) values of certain material parameters such as vacancy formation energies and stacking fault energies, and (d) in alloys, alloying and ordering energies, and possibly antiphase boundary energies. This is in contrast with ab initio studies, the objective of which is to determine all these properties from first principles. These goals of atomistic studies are, of course, the same for all semi-empirical approaches discussed in this collection of articles. In general, the validity of the structural features of lattice defects found in calculations using empirical schemes is best guaranteed if they can be related to fitted material properties and are not sensitively dependent on the deails of the fittings and functional forms employed.
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Houbiers, M., und H. T. C. Stoof. „Cooper-pair formation in trapped atomic Fermi gases“. Physical Review A 59, Nr. 2 (01.02.1999): 1556–61. http://dx.doi.org/10.1103/physreva.59.1556.

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Dissertationen zum Thema "Atomic pair"

1

Jakubassa-Amundsen, Doris. „Spectral Theory of the Atomic Dirac Operator in the No-Pair Formalism“. Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-23824.

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Masadeh, Ahmad Salah. „Quantitative structure determination of nanostructured materials using the atomic pair distribution function analysis“. Diss., Connect to online resource - MSU authorized users, 2008.

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Kerr, Elinor A. „Kinetic and spectroscopic studies of ion-pair states of iodine monochloride“. Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/12354.

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Cohen, Offir. „Generation of uncorrelated photon-pairs in optical fibres“. Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:b818b08a-27b5-4296-9f89-befec30b71fc.

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Light, which is composed of discrete quanta, or photons, is one of the most fundamental concepts in physics. Being an elementary entity, the behaviour of photons is governed by the rules of quantum mechanics. The ability to create, manipulate and measure quantum states of light is not only useful in foundational tests of quantum theory, but also in a wide range of quantum technologies – which aim to utilize non-classical properties of quantum systems to perform tasks not possible with classical resources. Only recently has it been possible to control the properties of number states of light, which have a fixed photon-number. Two-photon states are central to testing fundamental physical theories (such as locality and reality) and the implementation of quantum information technologies. The versatility of photon-pair states is en- abled by the potential entanglement properties it can posses. Thus controlling the correlations between photons is crucial to both pure and applied physics. To produce a single photon, a photon-pair state can be used. Detection of one photon indicates its twin’s existence. Many applications, such as optical quantum computation, require pure indistinguishable single photons. Heralding single pho- tons from a photon-pair will, in general, produce single photons in a mixed quantum state due to correlations within the pair. A common approach to creating photon-pairs is through the nonlinear sponta- neous four-wave mixing interaction in optical fibres. This thesis presents a theoreti- cal and experimental implementation of a scheme to tailor the spectral correlations within the pairs. Emphasis is placed on engineering the two-photon state such that they are completely uncorrelated. Spatial entanglement is naturally avoided due to the discrete nature of the optical fibre modes. Spectral correlations are eliminated by careful choice of dispersion characteristics and conditions. The purity of the photons generated by this scheme is demonstrated by means of two-photon inter- ference from independent sources. We measure a purity of (85.9 ± 1.6)% with no spectral filtering, exhibiting the usefulness of this source for quantum technologies and applications.
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Wang, Ruizhe. „Magnetic fluctuations and clusters in the itinerant ferromagnet Ni-V close to a disordered quantum critical point“. Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1555936445433091.

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Lignier, Hans. „Etude de la localisation dynamique avec des atomes refroidis par laser“. Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2005. http://tel.archives-ouvertes.fr/tel-00011644.

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Le chaos quantique désigne l'étude de systèmes dont le prolongement classique est chaotique. Le modèle du pendule pulsé, qui en est un exemple paradigmatique, est réalisé expérimentalement en plaçant un échantillon d'atomes refroidis (MOT) dans une onde stationnaire pulsée formée par un faisceau laser retro-reflechi. L'étude de la dynamique s'appuie sur la mesure de la distribution d'impulsions des atomes.
Après avoir retrouvé expérimentalement le phénomène quantique de localisation dynamique, lié au caractère périodique de la séquence de pulses, la destruction de ce phénomène (délocalisation dynamique) par l'utilisation de séquences superposant deux séries de pulses de période (séquence bicolore) est étudiée puis expliquée par un modèle théorique. Cette analyse suggère que la délocalisation est, dans ce contexte, réversible. Il est ainsi montré expérimentalement qu'une séquence bicolore inversée conduit une délocalisation suivie d'une relocalisation.
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Lahaye, Thierry. „Refroidissement par évaporation d'un jet atomique guidé magnétiquement“. Phd thesis, Université Pierre et Marie Curie - Paris VI, 2005. http://tel.archives-ouvertes.fr/tel-00011260.

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Ce mémoire de thèse a pour sujet la réalisation expérimentale d'un jet atomique ultrafroid guidé magnétiquement, dans le régime collisionnel. Après une description détaillée du dispositif expérimental développé à cette fin, une méthode de thermométrie par spectroscopie radio-fréquence est proposée et démontrée expérimentalement. Les variations de température, densité dans l'espace des phases et taux de collisions élastiques du jet au cours d'un cycle évaporation-rethermalisation sont calculées. Des expériences d'évaporation radio-fréquence à deux antennes sont ensuite présentées, qui permettent de prouver l'existence de collisions au sein du jet. Deux méthodes permettant d'augmenter le taux de collisions sont ensuite étudiées théoriquement, puis mises en oeuvre. Le gain en taux de collisions ainsi obtenu est mis à profit pour refroidir le jet à l'aide d'une dizaine de zones d'évaporation, permettant d'en accroître la densité dans l'espace des phases par un ordre de grandeur.
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Nussenzveig, Paulo. „Mesures de champs au niveau du photon par interférométrie atomique“. Phd thesis, Université Pierre et Marie Curie - Paris VI, 1994. http://tel.archives-ouvertes.fr/tel-00011897.

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Une transition entre deux niveaux voisins d'un atome de Rydberg et une cavité micro-onde de très haut facteur de qualité constituent un excellent outil pour la recherche sur les interactions matière- rayonnement au niveau le plus fondamental. La simplicité du système (deux niveaux atomiques couplés à un seul mode du champ) permet un traitement analytique complet de la plupart des phénomènes. Dans ce mémoire nous étudions les effets dispersifs de l'interaction non-résonnante entre atomes et cavité. Nous avons mesuré la variation linéaire des déplacements des niveaux d'énergie atomiques avec le nombre moyen de photons dans la cavité. Des déplacements dus à une intensité moyenne inférieure au photon unique ont été observés. En l'absence de champ injecté, il a été possible de mesurer le déplacement résiduel d'un des deux niveaux de la transition atomique: un déplacement de Lamb dû à un seul mode du champ. Ces déplacements d'énergie sont mesurés de façon sensible par une méthode interférométrique: la technique des champs oscillants séparés de Ramsey. Des expériences futures, dans une situation de très faible relaxation du champ, sont proposées. Le caractère quantique du champ sera alors dominant et il sera possible de réaliser une mesure nondestructive du nombre de photons: le caractère non-résonnant de l'interaction assure que les atomes ne peuvent ni absorber ni émettre des photons dans la cavité. Les expériences réalisées démontrent la sensibilité de l'appareil et ouvrent la voie à ces mesures non-destructives ainsi qu'à l'étude de systèmes "mésoscopiques" (états "chat de Schrödinger" du champ), à la "frontière" entre les mondes classique et quantique.
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Lopes, Raphael. „An atomic Hong-Ou-Mandel experiment“. Thesis, Palaiseau, Institut d'optique théorique et appliquée, 2015. http://www.theses.fr/2015IOTA0001/document.

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Cette thèse décrit l'observation expérimentale de l'effet Hong-Ou-Mandel avec une sourceatomique ultra-froide. L’expérience originale réalisée en 1987 par C. K. Hong, Z. Y. Ou et L. Mandel illustre de façon simple une interférence à deux particules explicable uniquement par la mécanique quantique : deux particules bosoniques et indiscernables, arrivant chacune sur une face d'entrée différente d'une lame semi-réfléchissante ressortent ensemble. Cet effet se traduit par une réduction du taux de détection en coïncidence entre les deux voies de sortie quand les particules arrivent simultanément sur la lame. Cette expérience fut originalement réalisée avec des photons et nous rapportons ici la première mise en oeuvre expérimentale avec des particules massives se propageant dans l’espace libre.Après présentation des différentes techniques nécessaires à sa réalisation, nous décrivons cette expérience et analysons les résultats obtenus. En particulier, la réduction du taux de coïncidence est suffisamment forte pour exclure toute interprétation classique ; l'observation de cet effet constitue une brique fondamentale dans le domaine de l’information quantique atomique
In this thesis, we report the first realisation of the Hong–Ou–Mandel experiment with massive particles in momentum space. This milestone experiment was originally performed in quantum optics: two photons arriving simultaneously at the input ports of a 50:50 beam-splitter always emerge together in one of the output ports. The effect leads to a reduction of coincidence counts which translates into a dip when particles are indistinguishable. We performed the experiment with metastable helium atoms where the specificities of the Micro-Channel-Plate detector allows one to recover the momentum vector of each individual atom.After listing the necessary tools to perform this experiment with atoms, the experimental sequence is discussed and the results are presented. In particular we measured a coincidence count reduction that cannot be explained through any simple classical model. This corresponds to the signature of a two-particle interference, and confirms that our atomic pair source produces beams which have highly correlated populations and are well mode matched. This opens the prospect of testing Bell’s inequalities involving mechanical observables of massive particles, such as momentum, using methods inspired by quantum optics. It also demonstrates a new way to produce and benchmark twin-atom pairs that may be of interest for quantum information processing
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Celino, Massimo. „Atomic scale modelling of disordered systems : the Si and SiSe2 case“. Université Louis Pasteur (Strasbourg) (1971-2008), 2002. http://www.theses.fr/2002STR13192.

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A température ambiante, les matériaux peuvent exister non seulement sous forme liquide ou cristalline, mais aussi adopter une structure amorphe. Les matériaux amorphes sont caractérisés par des propriétés physiques et chimiques d'un grand intérêt à la fois fondamental et technologique. Dans ce contexte, l'établissement d'une liaison entre la structure d'un réseau désordonné à l'échelle de l'atome et ses propriétés macroscopiques et thermodynamiques est une étape indispensable à franchir. A cet égard, parmi les approches théoriques, la méthode de la dynamique moléculaire est l'une des plus satisfaisante et prometteuse. Dans cette thèse, nous nous sommes intéressés aux systèmes désordonnés Si (le silicium) et SiSe2 (le diséléniure de silicium). Nous avons étudié l'amorphe Si dans un intervalle de valeurs allant de la température ambiante jusqu'au delà du point de fusion propre à l'amorphe. Nous avons développé une approche qui combine la méthode dite du `Monte Carlo inverse' (Reverse MonteCarlo) avec la dynamique moléculaire dans le cadre de la liaison forte (Tight-Binding) à température et à pression constante. La deuxième partie de cette thèse est consacrée à l'étude du liquide et de l'amorphe SiSe2. Ces réseaux désordonnés font partie d'une classe de systèmes binaires de composition AX2 (A=Si, Ge, X=Se, O, S). La structure de ces composés est caractérisée par un ordre structural (ordre a moyenne portée) impliquant des distances plus élevées que les distances entre plus proches voisins. La structure atomique des systèmes AX2 peut différer d'un cas à l'autre, par la présence de défauts homopolaires et d'écarts à la coordinence 4 relative aux liaisons entre les atomes A et les atomes X. Un traitement simplifié des interactions entre les atomes n'est pas approprié dans le cas du SiSe2, nous avons eu recours à la dynamique moléculaire ab-initio
At room temperature, materials can exists not only in the liquid or in the crystalline phase but also in the amorphous phase. The amorphous materials are characterized by physical and chemical properties that are of great interest from both fundamental and industrial point of view. In this framework several theoretical approaches have been developed but none of them is able to link the intrinsic disordered atomic structure with the macroscopic properties. Among the others the Molecular Dynamics approach is able to tackle this problem. In this thesis the Molecular Dynamics approach has been used to study the structural properties of two amorphous materials: silicon and silicon diselenide (SiSe2). Amorphous silicon has been studied from room temperature till the melting and above. We have developed an approach that combines the Reverse MonteCarlo method and the Molecular Dynamics technique based on the Tight-Binding theory. In the second part of the thesis we have studied the liquid and the amorphous SiSe2. SiSe2 is representative of a class of amorphous binary, semiconducting chalcogenides of technological interest. It belongs to a class of binary systems AX2 (A=Si, Ge, X=Se, O, S) whose structure is characterized by an intermediate range order. This feature is characterized by the presence of a first sharp diffraction peak (FSDP) in the total neutron structure factor. The atomic structure is characterized by the presence of tetrahedral structures centred on silicon atoms. However it is not possible to exclude the presence of a percentage of defects. Classical Molecular Dynamics is not enough accurate to describe the detailed balance between ionic and covalent bonding. For this reason we have resorted to first-principle calculation for the study of the structural features that at the atomistic level determine the presence of intermediate range order
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Bücher zum Thema "Atomic pair"

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Banerjee, Soham. Improved modeling of nanocrystals from atomic pair distribution function data. [New York, N.Y.?]: [publisher not identified], 2020.

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Shi, Chenyang. Local structure and lattice dynamics study of low dimensional materials using atomic pair distribution function and high energy resolution inelastic x-ray scattering. [New York, N.Y.?]: [publisher not identified], 2015.

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Ernst, Peierls Rudolf. Atomic histories. Woodbury, N.Y: AIP Press, 1997.

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Donnerberg, Hansjörg. Atomic simulation of electrooptic and magnetooptic oxide materials. Berlin: Springer, 1999.

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Abraham, Tamir, Hrsg. Mixing and excess thermodynamic properties: A literature source book : supplement 2. Amsterdam: Elsevier, 1986.

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An introduction to inertial confinement fusion. Boca Raton: Taylor & Francis, 2006.

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Glenn, Healey, Shafer Steven A und Wolff Lawrence, Hrsg. Color. Boston: Jones and Bartlett, 1992.

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Hines, James R. Recovery in Europe, Pair Skating, and Ice Dancing. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252039065.003.0010.

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This chapter discusses figure skating in Europe after World War II. The war in Europe ended in May 1945, but not until atomic bombs were dropped on Hiroshima and Nagasaki in August did Japan capitulate. Formal terms of surrender were signed a month later. The International Skating Union Council met in July 1946 and set dates for the resumption of competition. European Championships commenced at Davos on January 31, 1947, while the World Championships followed two weeks later at Stockholm. Participation at the championships demonstrated the sport's durability and stature. The ladies' and pairs' events boasted more entries than in 1939. Not surprisingly, men's events had fewer entries. Participation increased in the men's event in 1948 but not to the prewar level.
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Pacheco, Leonardo Lessa, und Ivoni Freitas-Reis. Gilbert Lewis e a delicada tessitura da teoria do par compartilhado. Brazil Publishing, 2020. http://dx.doi.org/10.31012/978-65-5861-092-2.

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This paper presents the results of a research that explored the context and intense dedication of the American chemist Gilbert Newton Lewis, aiming to investigate the consolidation of the shared pair theory that justified the formation of chemical bonds in the molecules from the elucidation of the atom. which we risk calling the atomic model. Original works by the twentieth century author were analyzed, specifically the article published in 1916, The Atom and the Molecule, and the 1923 book, Valence and the Structure of Atoms and Molecules. It was also analyzed periodical articles by scientists that in one way or another were directly related to the researched, either by laying the groundwork for Lewis's studies or by being directly related to their research. It is hoped with this work that the figure of Lewis will be remembered not only by one of his theories, but as a fundamental scientist for the construction of chemical knowledge encouraging everyone who, in some way, as undergraduate, postgraduate students. undergraduate or even acting teachers, were attached to it.
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Scerri, Eric. A Tale of Seven Elements. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780195391312.001.0001.

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In 1913, English physicist Henry Moseley established an elegant method for "counting" the elements based on atomic number, ranging them from hydrogen (#1) to uranium (#92). It soon became clear, however, that seven elements were mysteriously missing from the lineup--seven elements unknown to science. In his well researched and engaging narrative, Eric Scerri presents the intriguing stories of these seven elements--protactinium, hafnium, rhenium, technetium, francium, astatine and promethium. The book follows the historical order of discovery, roughly spanning the two world wars, beginning with the isolation of protactinium in 1917 and ending with that of promethium in 1945. For each element, Scerri traces the research that preceded the discovery, the pivotal experiments, the personalities of the chemists involved, the chemical nature of the new element, and its applications in science and technology. We learn for instance that alloys of hafnium--whose name derives from the Latin name for Copenhagen (hafnia)--have some of the highest boiling points on record and are used for the nozzles in rocket thrusters such as the Apollo Lunar Modules. Scerri also tells the personal tales of researchers overcoming great obstacles. We see how Lise Meitner and Otto Hahn--the pair who later proposed the theory of atomic fission--were struggling to isolate element 91 when World War I intervened, Hahn was drafted into the German army's poison gas unit, and Meitner was forced to press on alone against daunting odds. The book concludes by examining how and where the twenty-five new elements have taken their places in the periodic table in the last half century. A Tale of Seven Elements paints a fascinating picture of chemical research--the wrong turns, missed opportunities, bitterly disputed claims, serendipitous findings, accusations of dishonesty--all leading finally to the thrill of discovery.
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Buchteile zum Thema "Atomic pair"

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Rau, A. R. P. „States of an Atomic Electron Pair“. In Atoms in Unusual Situations, 383–95. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-9337-6_17.

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Lindgren, Ingvar, und John Morrison. „The Pair-Correlation Problem and the Coupled-Cluster Approach“. In Atomic Many-Body Theory, 381–423. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-61640-2_15.

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Grosser, J., O. Hoffmann und F. Rebentrost. „Direct Observation of Collisions by Laser Excitation of the Collision Pair“. In Atomic and Molecular Beams, 485–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56800-8_32.

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Ohashi, Tetsuya. „Generation of Atomic Vacancies by Dislocation Pair Annihilation“. In Synthesis Lectures on Mechanical Engineering, 57–66. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-37893-5_5.

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Berakdar, J. „Electron-Pair Emission from Solids and Clean Surfaces Upon Electron and Photon Impact“. In New Directions in Atomic Physics, 309–13. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4721-1_34.

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Laing, Michael. „Effective Atomic Number and Valence-Shell Electron-Pair Repulsion“. In ACS Symposium Series, 193–98. Washington, DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/bk-1994-0565.ch015.

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Momberger, K., N. Grün und W. Scheid. „Coupled channel analysis of electron-positron pair production in relativistic heavy ion collisions“. In Atomic Physics of Highly Charged Ions, 183–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76658-9_43.

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Voitkiv, A. B., und B. Najjari. „Electron Loss, Excitation, and Pair Production in Relativistic Collisions of Heavy Atomic Particles“. In Atomic Processes in Basic and Applied Physics, 153–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25569-4_7.

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Thiel, Joachim, Johannes Hoffstadt, Norbert Grün und Werner Scheid. „Electron-Positron Pair Creation in Relativistic Atomic Heavy Ion Collisions“. In NATO ASI Series, 453–64. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2568-4_61.

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Edkins, Stephen. „Atomic-Scale Electronic Structure of the Cuprate d-Symmetry Form Factor Charge Density Wave“. In Visualising the Charge and Cooper-Pair Density Waves in Cuprates, 59–88. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-65975-6_4.

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Konferenzberichte zum Thema "Atomic pair"

1

Güçlü, M. C. „Atomic Collisions and free Lepton Pair Production“. In LOW ENERGY ANTIPROTON PHYSICS: Eighth International Conference on Low Energy Antiproton Physics (LEAP '05). AIP, 2005. http://dx.doi.org/10.1063/1.2130191.

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Strayer, M. R. „Thirteen years of pair production“. In Atomic collisions: A symposium in honor of Christopher Bottcher (1945−1993). AIP, 1995. http://dx.doi.org/10.1063/1.49189.

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Vestergaard, B., und K. Molmer. „Atomic Pair Correlations and Propagation of Incoherent Light“. In EQEC'96. 1996 European Quantum Electronic Conference. IEEE, 1996. http://dx.doi.org/10.1109/eqec.1996.561614.

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Gould, Harvey, A. Belkacem, B. Feinberg, R. Bossingham und W. E. Meyerhof. „Electron capture from electron-positron pair production“. In Atomic collisions: A symposium in honor of Christopher Bottcher (1945−1993). AIP, 1995. http://dx.doi.org/10.1063/1.49186.

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Bulanin, M. O. „Collision-induced absorption intensity redistribution and the atomic pair polarizabilities“. In The 13th international conference on spectral line shapes. AIP, 1997. http://dx.doi.org/10.1063/1.51802.

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Hua, Xiao, Sandy Sanchez und Ullrich Steiner. „Phase Evolution During Perovskite Formation – An Insight from Pair Distribution Function“. In Online Conference on Atomic-level Characterisation of Hybrid Perovskites. València: Fundació Scito, 2022. http://dx.doi.org/10.29363/nanoge.hpatom.2022.008.

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Pan, Li, Don R. Metzger und Marek Niewczas. „The Meshless Dynamic Relaxation Techniques for Simulating Atomic Structures of Materials“. In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1284.

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Traditionally, Molecular Dynamics combined with pair potential functions or the Embedded Atom Method (EAM) is applied to simulate the motion of atoms. When a defect is generated in the crystalline lattice, the equilibrium of atoms around it is destroyed. The atoms move to find a new place where the potential energy in the system is minimum, which could result in a change of the local atomic structure. The present paper introduces new Dynamic Relaxation algorithm, which is based on explicit Finite Element Analysis, and pair or EAM potential function, to find equilibrium positions of the block of atoms containing different structural defects. The internal force and stiffness at the atoms (nodes) are obtained by the first and second derivatives of the potential energy functions. The convergence criterion is based on the Euclidean norm of internal force being close to zero when the potential energy is minimum. The damping ratio affects the solution path so that different damping ratios could lead to different minimum potential energy and equilibrium shapes. The numerical responses and results by applying free boundary conditions and certain periodic boundary conditions are presented. The choice of scaled mass of atoms, proper time step and damping appropriate for the efficient and stable simulation is studied.
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Vane, C. R., S. Datz, P. F. Dittner, H. F. Krause, C. Bottcher, M. Strayer, R. Schuch, H. Gao und R. Hutton. „Electron-positron pair production in Coulomb collisions at ultrarelativistic energies“. In The eighteenth international conference on the physics of electronic and atomic collisions. AIP, 1993. http://dx.doi.org/10.1063/1.45265.

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Koch, Karl, Stephen H. Chakmakjian, C. R. Stroud und Lloyd W. Hillman. „Broadband atomic response to incommensurate modulation frequencies“. In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.wf6.

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Pomeau et al.1 have shown that a two-level atom strongly driven by a single 100% amplitude modulated (AM) field can show broadband spectral behavior when the two-frequency components of the field are incommensurate. The equations describing the atomic response to a monochromatic field without making the rotating wave approximation (RWA) are identical to form to the equations describing a 100% amplitude modulated field within the RWA. This fact makes the observation of the predictions of Pomeau et al. experimentally realizable in an optical resonance experiment. We present theoretical and numerical results of a pair of 100% AM fields interacting with a single atomic resonance. The effects on the atomic response of commensurate and incommensurate modulation frequencies are discussed as are the experimental implications.
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Deb, Bimalendu. „Pair-correlation in Bose-Einstein Condensate and Fermi Superfluid of Atomic Gases“. In Invited Lectures of TC-2005. WORLD SCIENTIFIC, 2006. http://dx.doi.org/10.1142/9789812772510_0005.

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Berichte der Organisationen zum Thema "Atomic pair"

1

Billinge, S. J. L., und M. F. Thorpe. Local Atomic Structure of Semiconductor Alloys Using Pair Distribution Function Analysis. Office of Scientific and Technical Information (OSTI), Juni 2002. http://dx.doi.org/10.2172/795601.

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Turner Streets, Kathleen Ruth. The Atomic Weight Dependence and Mass Cross-Sections of Massive Hadron Pair Production in Proton - Nucleus Collisions at 800-GeV/c. Office of Scientific and Technical Information (OSTI), April 1989. http://dx.doi.org/10.2172/1427792.

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Heinola, K. Summary Report of the Second Research Coordination Meeting on Atomic Data for Vapour Shielding in Fusion Devices. IAEA Nuclear Data Section, Februar 2021. http://dx.doi.org/10.61092/iaea.gd9j-0nr6.

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The Second Research Coordination Meeting of the Coordinated Research Project on Atomic Data for Vapour Shielding in Fusion Devices was held as a virtual meeting on 7 – 9 October 2020. Eight experts representing eight research institutes globally (Australia, China, India, Netherlands, Spain, Syria, USA) in the field of atomic collisional physics and vapour formation for magnetic confinement fusion devices met together with the IAEA staff. Participants were theorists and modellers of plasma and vapour par-ticle collisional processes, experimentalists of spectral line properties, and vapour formation and spec-tral analyses. They described their research background, available experimental methodologies and the-ories applied in various computational tools as well as the results obtained. Open issues related to ele-mental particles formed during vapour evolution and the particle interaction processes were discussed and plans for coordinated research to be performed during the project were made. The proceedings of the meeting are summarized in this report.
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Munger, Charles T. Proposal for the Detection of Relativistic Anti-Hydrogen Atoms Produced by Pair Production with Positron Capture. Office of Scientific and Technical Information (OSTI), Juli 2003. http://dx.doi.org/10.2172/813309.

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Yourshaw, Ivan. Study of Pair and many-body interactions in rare-gas halide atom clusters using negative ion zero electron kinetic energy (ZEKE) and threshold photodetachment spectroscopy. Office of Scientific and Technical Information (OSTI), Juli 1998. http://dx.doi.org/10.2172/760297.

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