Relevant bibliographies by topics / Atom molecule collision

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

Academic literature on the topic 'Atom molecule collision'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Atom molecule collision"

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Goldstein, R., C. Figl, J. Grosser, O. Hoffmann, M. Jungen, J. Stalder, and F. Rebentrost. "Collision photography: Polarization imaging of atom-molecule collisions." Journal of Chemical Physics 121, no. 18 (November 8, 2004): 8769–74. http://dx.doi.org/10.1063/1.1799592.

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Mendes, Mónica, Gustavo García, Marie-Christine Bacchus-Montabonel, and Paulo Limão-Vieira. "Electron Transfer Induced Decomposition in Potassium–Nitroimidazoles Collisions: An Experimental and Theoretical Work." International Journal of Molecular Sciences 20, no. 24 (December 6, 2019): 6170. http://dx.doi.org/10.3390/ijms20246170.

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Electron transfer induced decomposition mechanism of nitroimidazole and a selection of analogue molecules in collisions with neutral potassium (K) atoms from 10 to 1000 eV have been thoroughly investigated. In this laboratory collision regime, the formation of negative ions was time-of-flight mass analyzed and the fragmentation patterns and branching ratios have been obtained. The most abundant anions have been assigned to the parent molecule and the nitrogen oxide anion (NO2–) and the electron transfer mechanisms are comprehensively discussed. This work focuses on the analysis of all fragment anions produced and it is complementary of our recent work on selective hydrogen loss from the transient negative ions produced in these collisions. Ab initio theoretical calculations were performed for 4-nitroimidazole (4NI), 2-nitroimidazole (2NI), 1-methyl-4- (Me4NI) and 1-methyl-5-nitroimidazole (Me5NI), and imidazole (IMI) in the presence of a potassium atom and provided a strong basis for the assignment of the lowest unoccupied molecular orbitals accessed in the collision process.
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Chen, Jun-Ren, Cheng-Yang Kao, Hung-Bin Chen, and Yi-Wei Liu. "Detecting high-density ultracold molecules using atom–molecule collision." New Journal of Physics 15, no. 4 (April 19, 2013): 043035. http://dx.doi.org/10.1088/1367-2630/15/4/043035.

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Halonen, Roope, Evgeni Zapadinsky, Theo Kurtén, Hanna Vehkamäki, and Bernhard Reischl. "Rate enhancement in collisions of sulfuric acid molecules due to long-range intermolecular forces." Atmospheric Chemistry and Physics 19, no. 21 (October 30, 2019): 13355–66. http://dx.doi.org/10.5194/acp-19-13355-2019.

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Abstract. Collisions of molecules and clusters play a key role in determining the rate of atmospheric new particle formation and growth. Traditionally the statistics of these collisions are taken from kinetic gas theory assuming spherical noninteracting particles, which may significantly underestimate the collision coefficients for most atmospherically relevant molecules. Such systematic errors in predicted new particle formation rates will also affect large-scale climate models. We studied the statistics of collisions of sulfuric acid molecules in a vacuum using atomistic molecular dynamics simulations. We found that the effective collision cross section of the H2SO4 molecule, as described by an optimized potentials for liquid simulation (OPLS). OPLS all-atom force field, is significantly larger than the hard-sphere diameter assigned to the molecule based on the liquid density of sulfuric acid. As a consequence, the actual collision coefficient is enhanced by a factor of 2.2 at 300 K compared with kinetic gas theory. This enhancement factor obtained from atomistic simulation is consistent with the discrepancy observed between experimental formation rates of clusters containing sulfuric acid and calculated formation rates using hard-sphere kinetics. We find reasonable agreement with an enhancement factor calculated from the Langevin model of capture, based on the attractive part of the atomistic intermolecular potential of mean force.
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Sun, Zhong-Fa, Marc C. van Hemert, Jérôme Loreau, Ad van der Avoird, Arthur G. Suits, and David H. Parker. "Molecular square dancing in CO-CO collisions." Science 369, no. 6501 (July 16, 2020): 307–9. http://dx.doi.org/10.1126/science.aan2729.

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Knowledge of rotational energy transfer (RET) involving carbon monoxide (CO) molecules is crucial for the interpretation of astrophysical data. As of now, our nearly perfect understanding of atom-molecule scattering shows that RET usually occurs by only a simple “bump” between partners. To advance molecular dynamics to the next step in complexity, we studied molecule-molecule scattering in great detail for collision between two CO molecules. Using advanced imaging methods and quasi-classical and fully quantum theory, we found that a synchronous movement can occur during CO-CO collisions, whereby a bump is followed by a move similar to a “do-si-do” in square dancing. This resulted in little angular deflection but high RET to both partners, a very unusual combination. The associated conditions suggest that this process can occur in other molecule-molecule systems.
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CHIN, CHENG, ANDREW J. KERMAN, VLADAN VULETIĆ, and STEVEN CHU. "CONTROLLED ATOM-MOLECULE INTERACTIONS IN ULTRACOLD GASES." Modern Physics Letters A 18, no. 02n06 (February 28, 2003): 398–401. http://dx.doi.org/10.1142/s0217732303010557.

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We observe and study the dynamic formation of cold Cs 2 molecules near collision Feshbach resonances in a cold cesium sample. The resonance Iinewidth is as low as E/h = 5 kHz , or equivalently, 10-11 eV. We suggest that few-atom, interaction effects can be studied in a 3D optical lattice where several atoms can be confined and isolated in an optical cell, which allows exquisite control of the atomic density and the interaction cross section.
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Tachikawa, Hiroto. "SN2 and SN2′ reaction dynamics of cyclopropenyl chloride with halide ion — A direct ab initio molecular dynamics (MD) study." Canadian Journal of Chemistry 83, no. 9 (September 1, 2005): 1597–605. http://dx.doi.org/10.1139/v05-176.

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Direct ab initio molecular dynamics (MD) calculations have been carried out for the reaction of cyclopropenyl chloride with halide ion (F–) (F– + (CH)3Cl → F(CH)3 + Cl–) in gas phase. Both SN2 and SN2′ channels were found as product channels. These channels are strongly dependent on the collision angle of F– to the target (CH)3Cl molecule. The collision at one of the carbon atoms of the C=C double bond leads to the SN2′ reaction channel; whereas the collision at the methylene carbon atom leads to the SN2 reaction channel. The reactions proceed via a direct mechanism without long-lived complexes. The reaction mechanism is discussed on the basis of the theoretical results.Key words: SN2 reaction, direct ab initio molecular dynamics, halogen exchange, reaction mechanism.
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Flammang, Robert, Julien De Winter, Pascal Gerbaux, Vinh Son Nguyen, and Minh Tho Nguyen. "Internal Energy Effects on the Ion/Molecule Reactions of Ionized Methyl Isocyanide." European Journal of Mass Spectrometry 14, no. 5 (April 1, 2008): 299–309. http://dx.doi.org/10.1255/ejms.936.

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Electron ionization of methyl isocyanide in various chemical ionization conditions is reported and, depending on the energy conditions used, different ion/molecule reactions are observed. It is proposed, on the basis of combined quantum chemical (DFT) calculations and tandem mass spectrometric experiments, that a common intermediate could be a cumulenic ionized dimer dissociating in the ion source following two energy depending competitive channels, a loss of a hydrogen atom and a loss of a methyl group. Proposed structures for new cumulenic ions are supported by collision experiments in the high (collisional activation) or/and low (collision-induced dissociations) translational energy regime.
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Tokumasu, Takashi. "A Molecular Dynamics Study for Dissociation of H2 Molecule on Pt(111) Surface." Advanced Materials Research 452-453 (January 2012): 1144–48. http://dx.doi.org/10.4028/www.scientific.net/amr.452-453.1144.

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The dissociation phenomena of H2 molecule on Pt(111) surface was simulated by Molecular Dynamics (MD) method and the effect of motion of the gas molecule or surface atoms on dissociation phenomena was analyzed in detail. The Embedded Atom Method (EAM) was used to model the interaction between an H2 molecule and Pt(111) surface. Using this potential, simulations of an H2 molecule impinging on a Pt(111) surface were performed and the characteristics of the collision were observed. Using MD data the dynamic dissociation probability were obtained and compared with the static dissociation probability to analyze the effect of atomic motion on dissociation phenomena.
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Abel, Martin, and Lothar Frommhold. "Collision-induced spectra and current astronomical research." Canadian Journal of Physics 91, no. 11 (November 2013): 857–69. http://dx.doi.org/10.1139/cjp-2012-0532.

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Collision-induced spectra are the spectra of complexes of two or more atoms or molecules in a “fly-by” collisional encounter. Collision-induced absorption (CIA) has been observed in many dense gases and gas mixtures, in most cases at infrared frequencies in the form of quasi continua, and also in liquids and solids. CIA spectra of several binary complexes have been computed using modern quantum chemical methods, combined with molecular scattering theory, which couples the collisional complex to the radiation field as usual in other spectroscopic work. Binary collisional systems, such as H2 interacting with another H2 molecule, or with a helium or hydrogen atom, are first candidates for such computational work, owing to their small number of electrons and the astrophysical interest in such systems. The computed CIA spectra are found to be in close agreement with existing laboratory measurements of such spectra. Laboratory measurements exist at a limited selection of temperatures around 300 K and lower, but theory currently also provides CIA data for temperatures up to 9000 K and for higher frequencies (well into the visible), on a dense grid of temperatures and frequencies. For such calculations, detailed potential energy surfaces (PES) of the supermolecular complexes, along with the induced dipole surfaces (IDS), are needed so that the rotovibrational matrix elements of PES and IDS may be computed for the molecules involved, which may be highly rotovibrationally excited. Modern astronomical research needs opacity tables for analyses of the atmospheres of “cool” objects, such as cool white dwarfs, solar and extrasolar planets and their big moons, cool main sequence stars, and “first” stars, which are briefly described in a concluding section.
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Dissertations / Theses on the topic "Atom molecule collision"

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Beyene, Musie. "Magnetic field control of ultracold atom-molecule collision." Thesis, Durham University, 2011. http://etheses.dur.ac.uk/3196/.

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In this work we investigate the potential of controlling cold (O(K)−mK) and ultracold (mK-μK) atom-molecule collisions by tuning scattering states across Feshbach resonances using magnetic fields. We are interested in particular in the prospect of suppressing the often undesirable inelastic collisions. The He-O_2 system provides the vehicle for our study. We calculate bound and quasi-bound states of several isotopic combinations, including their Zeeman structure, to reveal the underlaying pattern for easier characterization of quasi-bound states in terms of rigorous and approximately good quantum numbers. These calculations also help us locate the fields at which zero-energy resonances will occur. Scattering calculations are then performed for collisions of 3^He and 4^He with {16}^O_2 at fixed (1 μK) energy but varying magnetic field. The field is varied to sweep the scattering state across resonance. At low and ultralow energies we enter the Wigner threshold regime where the S-partial wave dominates the wavefunction. The cross sections, and the real and imaginary parts of the scattering length, vary dramatically across resonance. Their profiles are used to analyze the resonances. In a highlight of our results we show that dramatic suppression of inelastic cross sections occur for 4^He-{16}^O_2 . The resonances are relatively wide (of order 100 Gauss), with suppression of inelastic scattering over a similarly wide range of fields and for temperatures ranging from 10 mK down to 1 μK. We conclude that under certain conditions it is possible to almost completely eliminate inelastic collisions. This is potentially very important for cooling techniques, such as evaporative and sympathetic cooling, that require efficient elastic cross sections. Suppression of inelastic collisions can not only increase thermalization efficiency but it can also result in longer trap-lifetimes by reducing transitions to untrapable states.
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Quichaud, Viviane. "Etude des processus elementaires : de synthese de la molecule no, en post-decharge en ecoulement, de collisions titane-gaz rares, titane-molecules, par perturbation laser resolue en temps." Paris 6, 1987. http://www.theses.fr/1987PA066135.

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I. Etude de la preparation des etats excites de no dans un dispositif de post-decharge en ecoulement a partir de n::(2) excite (prepare par transfert d'excitation a partir d'atomes ar metastables dans une decharge basse pression) et de o (obtenu par dissociation de o::(2) dans une decharge de he). Observation d'une emission intense des bandes gamma de no, qui implique un etat a courte duree de vie (b) de n::(2) et le premier etat metastable de o. Ii. Analyse des processus d'extinction et de transfert d'excitation a partir d'etats a courte duree de vie de ti (crees dans un dispositif a cathode creuse) lors de collisions avec des gaz rares (ar, ne, he) et des molecules (n::(2),h::(2)). Ces experiences permettent l'etude de cinetiques de reactions elementaires au sein d'un plasma basse pression ensemence de vapeurs metalliques, a l'aide du dispositif de post-decharge en ecoulement
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Gadea, Florent Xavier. "Theorie des hamiltoniens effectifs : applications aux problemes de diabatisation et de collision reactive." Toulouse 3, 1987. http://www.theses.fr/1987TOU30276.

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Etude approfondie sur la theorie des hamiltoniens effectifs et analyse de leurs applications aux methodes de diabatisation et au traitement des collisions reactives. Propositions pour le calcul des valeurs propres de l'hamiltonien par des methodes de perturbation ou iteratives, pour l'emploi d'hamiltoniens effectifs dans le calcul des surfaces quasi diabatiques et le traitement general des collisions reactives. Application a la reaction cs+h::(2) etudiee par les methodes ab initio pour la geometrie colineaire : surfaces de potentiel, sections efficaces et mecanismes predominants
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Girard, Bertrand. "Etude de la collision reactive ii + f -> if + i par fluorescence induite par laser." Paris 6, 1987. http://www.theses.fr/1987PA066398.

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Etude de cette collision par la methode des faisceaux croises et grace a la transition (b <- x) intense, dans le visible, apres analyse de la saturation du processus d'excitation laser de cette transition de if forme. Deduction des populations des differents niveaux rovibrationnels de l'etat x. Etablissement d'une cartographie detaillee de la distribution rotationnelle des niveaux vibrationnels v = 8 a 20 de l'etat x de if: aspect bimodal qui implique la coexistence de deux chemins reactionnels differents. Attribution a un artefact de l'important signal observe anterieurement pour v = 0. Mesures preliminaires de la section efficace differentielle par effet doppler
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Astruc, Jean-Pierre. "Transfert d'électron entre atomes excités et molécules dans une expérience en jets croisés avec fluorescence résolue dans le temps." Paris 13, 1987. http://www.theses.fr/1987PA132020.

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Etude experimentale avec résolution temporelle à l'échelle de la nanoseconde des valeurs absolues des séctions efficaces pour les transferts partiels d'énergie électronique entre Na(4d) et He, Ar, N(2), O(2), N(2)o et SF(6). Développement quantitatif de deux modèles à intermediaire ionique : réseau de multicroisement et diffusion résonnants atome excité-molecule. Emploi de l'approximation d'impact avec correction d'effet de coeur pour la transfert de moment orbital na(4d -> 4f)
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Rossi, François-Noël. "Etude théorique des collisions non réactives entre atomes alcalins et molécules d'hydrogène ou de deuterium : Calcul et analyse des surfaces de potentiel, application aux transitions de structure fine du rubidium." Paris 13, 1986. http://www.theses.fr/1986PA132015.

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Calcul des courbes de potentiel adiabatiques pour les géométries colinéaires et perpendiculaires, à l'aide d'un pseudopotentiel dépendant du moment orbital électronique et d'une approche à deux centres; bon accord avec les calculs ab initio existants. Examen des différentes symétries de ces systèmes dans le formalisme de la théorie des groupes, afin d'étudier les valeurs propres et facteurs propres de l'hamiltonien électronique. Calcul quantique des sections efficaces relatives des transitions de structure fine de Rb induites par collision avec H(2) ou D(2). En tenant compte des niveaux rotationnels moléculaires, obtention d'un très bon accord avec les résultats expérimentaux et interprétation de l'effet isotopique
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Lühr, Armin. "Collisions of low-energy antiprotons and protons with atoms and molecules." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2010. http://dx.doi.org/10.18452/16084.

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In dieser Arbeit wird eine, zeitabhängige, nicht störungstheoretische numerische Methode entwickelt, welche Ionisation und Anregung von Atomen oder Molekülen in Stößen mit entweder PB oder P beschreibt und auf der impact-parameter Methode basiert. Es wird eine spektrale close-coupling Methode verwendet, um die zeitabhängige Schrödinger-Gleichung zu lösen, in welcher die Wellenfunktion in (effektive) Ein- oder Zwei-Elektronen-Eigenzustände des Targets entwickelt wird. Dies beinhaltet auch eine erstmalige volle Zwei-Elektronen-Beschreibung von H2 in PB-Stößen. Rechnungen werden für PB-Stöße mit H, H2+ und H2 sowie He und den Alkaliatomen Li, Na, K und Rb durchgeführt. Daten für P-Stöße werden für H2 und die Alkaliatomen Li, Na und K erzielt. Die Methode wird durch einen detaillierten Vergleich der erhaltenen Ergebnisse für P-Stöße und für PB + He mit Literaturdaten verifiziert. Andererseits ergänzen die totalen und differentiellen Wirkungsquerschnitte für Ionisation und Anregung der Targets in PB-Stößen die spärliche Literatur. Sowohl die Resultate für verschiedene Targets als auch für PB- und P-Stöße werden miteinander verglichen. Ein Schwerpunkt dieser Arbeit liegt auf der Untersuchung von PB + H2, welche die Abhängigkeit der Wirkungsquerschnitte vom Kernabstand und von der relativen Ausrichtung der molekularen Achse beinhaltet. Weiterhin werden Ergebnisse mit Ein-Elektronen-Modellpotentialen erzielt und mit der vollen Zwei-Elektronen-Beschreibung von H2 verglichen. Außerdem werden Energieverluste in PB-Stößen bestimmt.
In this work a nonperturbative, time-dependent numerical approach is developed which describes ionization and excitation of atoms or molecules by either PB or P impact based on the impact-parameter method. A spectral close-coupling method is employed for solving the time-dependent Schrödinger equation in which the scattering wave function is expanded in (effective) one- or two-electron eigenstates of the target. This includes for the first time a full two-electron, two-center description of the H2 molecule in PB collisions. The radial part of the one-electron eigenstates is expanded in B splines while the two-electron basis is obtained with a configuration-interaction approach. Calculations are performed for PB collisions with H, H2+, and H2 as well as with He and alkali-metal atoms Li, Na, K, and Rb. Additionally, data are obtained for P collisions with H2, Li, Na, and K. The developed method is tested and validated by detailed comparison of the present findings for P impacts and for PB + He collisions with literature data. On the other hand, total and differential cross sections for ionization and excitation of the targets by PB impact complement the sparse literature data of this kind. Results gained from different targets as well as from PB and P impact are compared with each other and assessed. Furthermore, results obtained with one-electron model potentials are compared to the full two-electron description of H2. Finally, stopping powers for PB impacts are determined.
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Bull, James. "Application of Quantum Mechanics to Fundamental Interactions in Chemical Physics: Studies of Atom-Molecule and Ion-Molecule Interactions Under Single-Collision Conditions: Crossed Molecular Beams; Single-Crystal Mössbauer Spectroscopy: Microscopic Tensor Properties of ⁵⁷Fe Sites in Inorganic Ferrous High-Spin Compounds." Thesis, University of Canterbury. Department of Chemistry, 2010. http://hdl.handle.net/10092/4292.

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As part of this project and in preparation for future experimental studies of gas-phase ion-molecule reactions, extensive modification and characterization of the crossed molecular beam machine in the Department of Chemistry, University of Canterbury has been carried out. This instrument has been configured and some preliminary testing completed to enable the future study of gas-phase ion-molecule collisions of H⁺₃ and Y⁻ (Y = F, Cl, Br) with dipole-oriented CZ₃X (Z = H, F and X = F, Cl, Br). Theoretical calculations (ab initio and density functional theory) are reported on previously experimentally characterized Na + CH₃NO₂, Na + CH₃NC, and K + CH₃NC systems, and several other systems of relevance. All gas-phase experimental and theoretical studies have the common theme of studying collision orientation dependence of reaction under singlecollision conditions. Experimental measurements, theoretical simulations and calculations are also reported on some selected ferrous (Fe²⁺) high-spin (S=2) crystals, in an attempt to resolve microscopic contributions of two fundamental macroscopic tensor properties: the electric-field gradient (efg); and the mean square displacement (msd) in the case when more than one symmetry related site of low local point-group symmetry contributes to the same quadrupole doublet. These determinations have been made using the nuclear spectroscopic technique of Mössbauer spectroscopy, and complemented with X-ray crystallographic measurements.
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BERGNES, BRASEY CHANTAL. "Etude des processus directs elastique et inelastiques se produisant lors de la collision entre un ion d'helium et une cible d'hydrogene, pour une energie variant de 1,5 a 30 kev." Toulouse 3, 1988. http://www.theses.fr/1988TOU30204.

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Etude des sections efficaces doublement differentielles des processus elastiques et inelastiques au cours de la collision d'un faisceau d'ions de he avec h ou h::(2), entre 1,5 et 30 kev, pour des angles de diffusion compris entre 5' et 30**(o), par spectrometrie de perte d'energie du projectile. Comparaison des resultats a des valeurs calculees et mesurees anterieurement a d'autres auteurs. Proposition d'un modele permettant d'interpreter les resultats pour la cible h
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Horton, Timothy Scott. "COLLISIONAL AND RADIATIVE RELAXATION IN SODIUM DIMER AND ARGON ATOM COLLISIONS." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1480693544113525.

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Books on the topic "Atom molecule collision"

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Gianturco, Franco A. Collision Theory for Atoms and Molecules. Boston, MA: Springer US, 1989.

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1938-, Gianturco Francesco A., ed. Collision theory for atoms and molecules. New York: Plenum Press, 1989.

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Gianturco, Franco A., ed. Collision Theory for Atoms and Molecules. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5655-4.

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Collisions of electrons with atoms and molecules. New York: Plenum Press, 1987.

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Drukarev, Grigorii Filippovich. Collisions of Electrons with Atoms and Molecules. Boston, MA: Springer US, 1987.

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Drukarev, G. F. Collisions of Electrons with Atoms and Molecules. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1779-1.

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Burke, P. G. Photon and Electron Collisions with Atoms and Molecules. Boston, MA: Springer US, 1997.

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Burke, Philip G., and Charles J. Joachain, eds. Photon and Electron Collisions with Atoms and Molecules. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5917-7.

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I, Abakumov A., and Vinogradov V. S, eds. Matematicheskoe modelirovanie uprugogo vzaimodeĭstvii͡a︡ bystrykh ėlektronov s atomami i molekulami. Moskva: Vychislitelʹnyĭ t͡s︡entr AN SSSR, 1986.

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Burke, Philip G. Theory of Electron--Atom Collisions: Part 1: Potential Scattering. Boston, MA: Springer US, 1995.

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Book chapters on the topic "Atom molecule collision"

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Bransden, B. H. "Non-Adiabatic Atom-Atom Collision." In Collision Theory for Atoms and Molecules, 289–342. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5655-4_9.

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Ford, A., and John Reading. "Ion-Atom and Atom-Atom Collisions." In Springer Handbook of Atomic, Molecular, and Optical Physics, 753–60. New York, NY: Springer New York, 2006. http://dx.doi.org/10.1007/978-0-387-26308-3_50.

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Nathanson, Gilbert M. "When Liquid Rays Become Gas Rays: Can Evaporation Ever Be Non-Maxwellian?" In Molecular Beams in Physics and Chemistry, 631–47. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63963-1_27.

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AbstractA rare mistake by Otto Stern led to a confusion between density and flux in his first measurement of a Maxwellian speed distribution. This error reveals the key role of speed itself in Stern’s development of “the method of molecular rays”. What if the gas-phase speed distributions are not Maxwellian to begin with? The molecular beam technique so beautifully advanced by Stern can also be used to explore the speed distribution of gases evaporating from liquid microjets, a tool developed by Manfred Faubel. We employ liquid water and alkane microjets containing dissolved helium atoms to monitor the speed of evaporating He atoms into vacuum. While most dissolved gases evaporate in Maxwellian speed distributions, the He evaporation flux is super-Maxwellian, with energies up to 70% higher than the flux-weighted average energy of 2 RTliq. The explanation of this high-energy evaporation involves two beautiful concepts in physical chemistry: detailed balancing between He atom evaporation and condensation (starting with gas-surface collisions) and the potential of mean force on the He atom (starting with He atoms just below the surface). We hope that these measurements continue to fulfill Stern’s dream of the “directness and simplicity of the molecular ray method.”
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Trajmar, Sandor, William McConkey, and Isik Kanik. "Electron-Atom and Electron-Molecule Collisions." In Springer Handbook of Atomic, Molecular, and Optical Physics, 929–41. New York, NY: Springer New York, 2006. http://dx.doi.org/10.1007/978-0-387-26308-3_63.

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Billing, Gert Due. "Energy Transfer in Atom/Molecule Collisions with Molecules and Surfaces." In Nonequilibrium Processes in Partially Ionized Gases, 91–104. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4615-3780-9_6.

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Kohn, W. "Theory of Atom-Surface Collisions." In Interaction of Atoms and Molecules with Solid Surfaces, 53–70. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-8777-0_3.

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Frank, A., R. Lemus, and R. D. Santiago. "Vibron Model Description of Atom-Molecule Collisions." In Symmetries in Science VII, 191–99. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2956-9_18.

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Limão-Vieira, Paulo, Filipe Ferreira da Silva, and Gustavo García Gómez-Tejedor. "Electron Transfer-Induced Fragmentation in (Bio)Molecules by Atom-Molecule Collisions." In Radiation Damage in Biomolecular Systems, 59–70. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2564-5_3.

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Cocke, Lew, and Michael Schulz. "Ion-Atom Collisions - High Energy." In Springer Handbook of Atomic, Molecular, and Optical Physics, 951–66. New York, NY: Springer New York, 2006. http://dx.doi.org/10.1007/978-0-387-26308-3_65.

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Tronc, Michel. "Low Energy Electron-Molecule Collision Experiments." In Collision Theory for Atoms and Molecules, 215–27. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5655-4_7.

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Conference papers on the topic "Atom molecule collision"

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Bancewicz, Tadeusz, George Maroulis, and Theodore E. Simos. "The Septor Part of a Linear Molecule—Atom Collision-Induced Hyperpolarizability." In COMPUTATIONAL METHODS IN MODERN SCIENCE AND ENGINEERING: Advances in Computational Science: Lectures presented at the International Conference on Computational Methods in Sciences and Engineering 2008 (ICCMSE 2008). AIP, 2009. http://dx.doi.org/10.1063/1.3117118.

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Sakiyama, Yukinori, Shu Takagi, and Yoichiro Matsumoto. "Multiscale Analysis of Silicon LPCVD Reactor." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72051.

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We demonstrate the multiscale analysis of the transport phenomena in a low pressure reactor. In this method, the macroscopic phenomena such as the temperature and the density distribution are related to the microscopic electronic structure of atom/molecule. By connecting the different scales with physical models, the macroscopic properties are obtained starting from the first principle calculation without any empirical parameters. Here, we take the silicon epitaxial growth from a gas mixture of silane and hydrogen as an example. As the first step of this method, we calculated the intermolecular potential energy of SiH4/H2 using the ab initio molecular orbital calculations. Then, an analytical pair potential model was constructed to reproduce the potential energy surface obtained from the ab initio calculation. We have confirmed the validation of the potential model by comparing the experimental data of the transport properties with the molecular dynamics simulation using the potential model. Subsequently, the binary molecular collision models were constructed by the classical trajectory calculation using the potential model as the second step of the multiscale analysis. The trajectory calculations were conducted for the various combinations of the initial translational and the rotational energy. Through the statistical analysis of the trajectory calculations, the elastic/inelastic collision cross section and the scattering angle model were constructed. Finally, the direct simulation Monte Carlo simulation of flow field in a low parssure reactor was executed. The thin film thickness distribution was also investigated and discussed. This method was extended to analyze the surface reaction, which is an ongoing research work and only the current progress is reported here.
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A., José Récamier. "Algebraic methods for an atom-anharmonic oscillator collision." In Half collision resonance phenomena in molecules. AIP, 1991. http://dx.doi.org/10.1063/1.40545.

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Park, Jun Sung, and Seung Wook Baek. "Numerical Analysis of Performance of DF Chemical Laser With a Radial-Expansion Nozzle Array According to D2 Injection Angles." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58089.

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It is chemical laser system that can be used for not only new strategic weapon system for the military purpose, but also a manufacturing tool in industrial areas due to the characteristic of high power laser beam in megawatt range. In order to increase laser beam power in the chemical laser system, mixing efficiency of fuel and oxidant should be higher and more excited molecules be produced by mean of chemical reaction. Basically, the production of a lot of excited molecules in the laser cavity results from the high mass flow rates of fuel and oxidant as well as high mixing and reaction efficiencies, however, it is difficult for the planar nozzle array which has been widely used until now to supply high mass flow to the chemical laser cavity. A radial expansion nozzle array as an innovated alternative of the planar nozzle system is designed. The laser beam generation in this system is achieved by mixing F atom from supersonic nozzle and D2 molecule from the holes of round-bended supply line which are distributed with zigzag configuration, hence the reaction surface will be stretched. Consequently, it is expected that more excited molecules will be produced and population inversion also be higher. Based on that the fuel injection angle with mainstream has a big influence of performance of supersonic combustor, the effects of D2 injection angles with the main F flow on mixing enhancement and laser beam power are numerically investigated. The results are discussed by comparison with three cases of D2 injection angles; 10°, 20° and 40° with the main flow direction. Major results reveal that the area where the DF(1) excited molecules as a representative product in the DF chemical laser system are produced becomes larger when the D2 injection angle increases. The reason is that the surface of chemical reaction is larger and the field temperature is higher with increase of the D2 injection angle. And in all the vibrational transitions, the distributions of the highest maximum small signal gains are observed near the inlet when the D2 injection angle is 40°. As the D2 injection angle increases, the values of the maximum SSG are higher and the area including the high gains is also wider for the most part of domain. Based on these maximum SSG distributions, the highest power of laser beam is expected to be generated when the D2 injection angle is 40°, namely higher. However, the range of population inversion becomes narrower as the D2 injection angle increases, because the collision of molecules or atoms happens more often so that the relaxation time will be reduced as the cavity pressure caused by the high D2 injection angle with the main flow direction increases.
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Dunn, Gordon H., M. M. Schauer, and S. R. Jefferts. "Measurements of very low-energy ion/atom-molecule collisions." In The Sixteenth International Conference on the Physics of Electronic and Atomic Collisions. AIP, 1990. http://dx.doi.org/10.1063/1.39228.

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Andrienko, Daniil, and Iain D. Boyd. "Vibrational Relaxation and Dissociation of Oxygen in Molecule-Atom Collisions." In 45th AIAA Thermophysics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-3251.

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Kvale, T. J., A. Sen, and D. G. Seely. "Electron detachment in hydrogen negative ion-atom and molecule collisions." In The fourteenth international conference on the application of accelerators in research and industry. AIP, 1997. http://dx.doi.org/10.1063/1.52652.

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Bergmann, K. "Collisions of atoms and molecules with laserfields." In Atomic physics 12. AIP, 1991. http://dx.doi.org/10.1063/1.40974.

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Harel, C., H. Jouin, B. Pons, L. F. Errea, L. Mendez, and A. Riera. "Molecular treatment of ion-atom collisions at intermediate energies." In The 19th international conference on the physics of electronic and atomic collisions. AIP, 1996. http://dx.doi.org/10.1063/1.49833.

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Becker, U. "Synchrotron radiation experiments on atoms and molecules." In The Sixteenth International Conference on the Physics of Electronic and Atomic Collisions. AIP, 1990. http://dx.doi.org/10.1063/1.39207.

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Reports on the topic "Atom molecule collision"

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Kielkopf, John F. A spectroscopic study of hydrogen atom and molecule collision. Final report. Office of Scientific and Technical Information (OSTI), July 2002. http://dx.doi.org/10.2172/808754.

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Flannery, M. R. Recombination, Electron-Excited Atom Collisions and Ion-Molecule Reactions. Fort Belvoir, VA: Defense Technical Information Center, December 1995. http://dx.doi.org/10.21236/ada303623.

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Hudson, Eric R. Understanding Molecular-Ion Neutral Atom Collisions for the Production of Ultracold Molecular Ions. Fort Belvoir, VA: Defense Technical Information Center, February 2014. http://dx.doi.org/10.21236/ada603578.

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Kielkopf, J. F. A spectroscopic study of hydrogen atom and molecule collisions. Progress report, 1994--1997. Office of Scientific and Technical Information (OSTI), January 1997. http://dx.doi.org/10.2172/621888.

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Lin, Chun C. Interactions and Collisions of Electrons With Atoms and Molecules. Fort Belvoir, VA: Defense Technical Information Center, October 2001. http://dx.doi.org/10.21236/ada401207.

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Heller, E. J. Grant 'Theoretical Studies of Time-of-Flight and Atom and Molecular Surface Collision'. Fort Belvoir, VA: Defense Technical Information Center, April 1990. http://dx.doi.org/10.21236/ada221705.

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Watson, R. L. Excitation of atoms and molecules in collisions with highly charged ions. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/5302309.

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Watson, R. Excitation of atoms and molecules in collisions with fast, highly charged ions. Office of Scientific and Technical Information (OSTI), January 1988. http://dx.doi.org/10.2172/5218966.

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Watson, R. L. Excitation of atoms and molecules in collisions with highly charged ions. Progress report, January 1, 1991--March 1, 1992. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/10140330.

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Watson, R. L. Excitation of atoms and molecules in collisions with highly charged ions. Final report, July 1, 1978--June 30, 1994. Office of Scientific and Technical Information (OSTI), May 1998. http://dx.doi.org/10.2172/604322.

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