Download or read book Transitions de structure fine par collisions atome atome et ion atome written by Françoise Masnou-Seeuws and published by . This book was released on 1973 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Etude générale de la collision atome-atome lorsque le couplage spin-orbite n'est pas négligeable, et à l’application au système sodium-hélium: hypothèses sur la trajectoire et le potentiel, résolution du système d'équations couplées. L'interaction prédominante entre les deux atomes est l'interaction répulsive a moyenne portée. Explication du mécanisme de collision lorsque varie la distance entre atomes. Généralisation de l'étude a l'excitation de transitions de structure fine d'ions positifs de configuration p (FeXIV) et p2(NII, OIII, SiIX, FeXIII) par impact protonique.
Download or read book Atoms I Atome I written by E. Richard Cohen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coherence in Atomic Collision Physics written by H.J. Beyer and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades the experimental investigation of atomic coherence phenomena has made rapid progress. Detailed studies have been performed of angular correlations, spin polarization effects, angular momen tum transfer, and the alignment parameters which characterize the charge cloud of excited atoms. The enormous growth in the number of these investigations was made possible through substantial development and application of new experimental technology, the development of sophisti cated theoretical models and numerical methods, and a fine interplay between theory and experiment. This interplay has resulted in a deeper understanding of the physical mechanisms of atomic collision processes. It is the purpose of the chapters in this book to provide introductions for nonspecialists to the various fields of this area as well as to present new experimental and theoretical results and ideas. The interest in spin-dependent interactions in electron-atom scattering has a long history; it dates back to the early investigations of Mott in 1929. While the more traditional measurements in this field were concerned with the determination of spin polarization and asymmetries, the range of investi gations has been expanded enormously during the last few years and now includes many observables sensitive to one or more of the various spin dependent interactions. The understanding of these effects requires a theoretical description of the orientation and alignment parameters of the target atoms, of the forma tion of resonances, of the influence of electron-exchange processes, and of the relativistic interactions inside the atom and between projectile and target.
Download or read book Transitions de structure fine des alcalins induites par collision sur des atomes de gaz rares ou des mol cules written by Jean-Michel Mestdagh (auteur d'une thèse de sciences.) and published by . This book was released on 1982 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THEORIE DES COLLISIONS INELASTIQUES ATOME ATOME ET ION ATOME PAR L APPROXIMATION SEMI CLASSIQUE APPLICATION A L ETUDE DES EFFETS DE TRAJECTOIRE POUR LE SYSTEME H H ET A L ETUDE D UNE TRANSITION ELECTRONIQUE LOCALISEE DU SYSTEME HE NE written by C.. GAUSSORGUES COURBIN and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: PRESENTATION D'UN DEVELOPPEMENT SYSTEMATIQUE DE L'APPROXIMATION SEMI-CLASSIQUE POUR ETUDIER LES COLLISIONS ATOME-ATOME ET DES CONDITIONS A REMPLIR: 1) MOUVEMENT DES NOYAUX PRINCIPALEMENT REGI PAR LA PARTIE DIAGONALE DE L'HAMILTONIEN DU SYSTEME; 2) POSSIBILITE DE DETERMINER UN POTENTIEL COMMUN AUX DIFFERENTS CANAUX DU PROBLEME CONSIDERE. APPLICATION A L'ETUDE DE L'EXCITATION PAR COUPLAGE ROTATIONNEL D'UN ATOME H PAR H**(+); EXTENSION DE LA METHODE A DES PROCESSUS FAISANT INTERVENIR UN COUPLAGE RADIAL, A DES PROCESSUS SE PRODUISANT A DES ENERGIES THERMIQUES OU DE L'ORDRE DU MEV, A DES SYSTEMES OU LA TRANSITION EST LOCALISEE DANS UNE REGION ETROITE (CAS DE HE**(+)-NE AUX BASSES ENERGIES). INTERET DE LA METHODE POUR ETUDIER L'INFLUENCE DES EFFETS DE TRAJECTOIRE SUR LES DIVERSES SECTIONS EFFICACES DIFFERENTIELLES ELASTIQUES ET INELASTIQUES EN COMPARENT LES RESULTATS DE LA "METHODE DE TRAJECTOIRE COMMUNE" A CEUX DE LA METHODE DU PARAMETRE D'IMPACT
Download or read book QUANTUM STUDY OF INELASTIC TRANSFERS IN ATOM ATOM AND ATOM MOLECULE COLLISIONS written by Didier Lemoine and published by . This book was released on 1988 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: I. ETUDE DES TRANSFERTS ENTRE COMPOSANTES DE STRUCTURE FINE D'UN ATOME ALCALIN DANS UN ETAT ELECTRONIQUE DOUBLET P INDUITS PAR COLLISION AVEC UN ATOME SANS STRUCTURE; DETERMINATION DES SECTIONS EFFICACES ET DESCRIPTION TOTALEMENT ADIABATIQUE DE LA DYNAMIQUE DE COLLISION, METTANT EN EVIDENCE UN NOUVEAU MECANISME DE COUPLAGE. II. ETUDE DES TRANSFERTS ROTATIONNELS DANS N::(2) (ETAT FONDAMENTAL) ET LI::(2) (PREMIER ETAT EXCITE) INDUITS PAR COLLISION AVEC UN ATOME DE GAZ RARE; EXPLORATION DU DOMAINE DE VALIDITE DES DEUX APPROXIMATIONS COURAMMENT UTILISEES; ETUDE DE LA DISTRIBUTION ANGULAIRE DE LA DIFFUSION DANS LE SYSTEME DU CENTRE DE MASSE POUR N::(2)-NE; EXPLICATION DE L'ORIGINE DES EFFETS D'ASYMETRIE OBSERVES DANS LES TRANSITIONS ROTATIONNELLES POUR LI::(2)-HE, NE.
Download or read book Data Index for Energy Transfer Collisions of Atoms and Molecules 1970 1979 written by and published by . This book was released on 1981 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Etude th orique des collisions non r actives entre atomes alcalins et mol cules d hydrog ne ou de deuterium written by François-Noël Rossi and published by . This book was released on 1986 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Atomes et liaisons written by A. Julg and published by FeniXX. This book was released on 1970-01-01T00:00:00+01:00 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cet ouvrage est une réédition numérique d’un livre paru au XXe siècle, désormais indisponible dans son format d’origine.
Download or read book INIS Atomindex written by and published by . This book was released on 1988 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atoms III Molecules I Atome III Molek le I written by S. Flügge and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: dissociation, E, of a dimer into two monomers and that, E', of a trimer into a dimer and a monomer. The observed velocity distribution for a beam of sodium iodide is shown in Fig. 23. The monomer and dimer distributions, which are each of the form of Eq. (9. 2), are separately shown. The sum of the two assumed distributions is seen to agree with the experimental data. The data for lithium bromide are shown in Fig. 24. The separate distributions for the monomer, dimer, and trimer required to fit the data are shown as is the sum of these distributions. An attempt to describe the observed distribution in terms of a monomer and a dimer only is shown by the dotted line, where the relative amounts of these species have been adjusted to give a fit on the low velocity side of the spectrum. Table 2. Summary oj data on the degree of association oj diatomic molecules. The data on the fluorides are from unpublished results of M. EISENSTADT, G. ROTHBERG and P. KUSCH. Uncertainties in E and E' are given in parentheses. E E' Temperature OK I ----- ----" Species at which a2 a, kcaljmole p~10-2mmHg RbCl 866 0. 063 48. 0 (0. 5) I KCI 0. 083 897 45·8 (0. 7) I KI 823 0. 046 , 45·3 (0·9) NaC] 920 0. 259 44. 6 (0·9) i NaI 817 0. 235 38. 6 (3-4) LiC] 2.
Download or read book Processus d interaction entre photons et atomes written by Claude Cohen-Tannoudji and published by . This book was released on 1988 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atome Atome I II written by and published by . This book was released on 1956 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non adiabatic Transitions in Ion atom Collisions written by John Gerard Hughes and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1981 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
