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AbstractAbstract
[en] The collision theory is established for fine structure changes in the first doublet of the alkali metal - rare gas couple: the adiabatic potential curves are calculated, the semi-classical and quantum treatments of collision are given and the influence of the interaction potential on the total cross-section is analyzed. The experimental device built to measure the total cross-sections of fine structure transition for the K*-He couple is described: rare gas jet system, alkali jet system, laser, optics, detection. The results obtained on the cross-section sigma(4Psub(1/2)→4Psub(3/2)) are given for the couple K*-He from 0.07 to 0.4 eV
[fr]
On etablit la theorie des collisions de changement de structure fine du premier doublet du couple alcalins-gaz rares: on calcule les courbes de potentiel adiabatique, on donne les traitements semi-classique et quantique de la collision, et on analyse l'influence du potentiel d'interaction sur la section efficace totale. On decrit le dispositif experimental mis au point pour mesurer les sections efficaces totales de transition de structure fine du couple K*-He: dispositif du jet de gaz rare, dispositif du jet alcalin, laser, optique, detection. On donne les resultats obtenus sur la section efficace sigma(4Psub(1/2)→4Psub(3 /2)) du couple K*-He de 0,07 a 0,4 eVOriginal Title
Etude, aux energies thermiques, du transfert d'excitation d'atomes de potassium dans l'etat (4Psub(1/2)) en collision avec des atomes d'helium
Primary Subject
Source
1979; 105 p; These (3e Cycle).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation; Numerical Data
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