An experimental and theoretical study of electronic excitation and charge transfer processes in collisions between Cs() atoms and ions in the 0.30–4.00 keV energy range

Autor: Josep M. Lucas, M. Sabidó, Florent Xavier Gadea, Margarita Albertí, M. E. Aricha, J. de Andrés, A. Aguilar
Rok vydání: 2002
Předmět:
Zdroj: Chemical Physics. 281:33-47
ISSN: 0301-0104
DOI: 10.1016/s0301-0104(02)00595-5
Popis: The collisional system Cs + Na + with both species in their ground electronic state, has been studied using the crossed molecular beams technique and measuring the resulting fluorescent decay. Emissions from electronically excited Cs( 6 2 P 3/2 ) and Cs( 7 2 P 1/2,3/2 ) atoms have been detected as well as those from excited Na( 3 2 P 1/2,3/2 ) and Na( 4 2 D 3/2,5/2 ) produced by electron transfer. Cross-section values in the 0.30–4.00 keV energy range have been measured for the four different collision channels as well as the branching ratio between the resolved J -states for Cs( 7 2 P 1/2,3/2 ). A qualitative interpretation for some of the measured emission cross-sections as a function of the collision energy has been performed using ab initio one-electron calculations done for the (CsNa) + quasimolecule. Hemiquantal dynamical calculations have been carried out at selected collision energies including radial and angular non-adiabatic couplings, comparing the calculated cross-sections with the experimental data.
Databáze: OpenAIRE
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