Total cross sections for Na(3 2P1/2→3 2P3/2) + rare gas collisions
- 1 May 1976
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 64 (9) , 3538-3543
- https://doi.org/10.1063/1.432721
Abstract
Quantum‐mechanical calculations that use the recent pseudopotentials of Pascale and Vandeplanque were employed to obtain the 3 2P1/2→ 3 2P3/2 fine structure transition cross sections for Na+He, Ne, Ar, Kr, and Xe collisions. The collision energy range investigated was from threshold (0.00213 eV) to 0.5 eV. The cross sections are found to rise rapidly from threshold to a plateau, with the Na+Ar, Kr, Xe systems also exhibiting a large secondary maximum at approximately 0.1 eV. Regular undulatory structure was observed superimposed on all the cross sections except for the Na+Ne system, while resonances caused by quasibound states were found to be most prominent on the Na+Ar system. Thermally averaged cross sections were calculated from 100 to 1000 °K and are found to be in reasonable accord with experiment.Keywords
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