The collision cross sections for the fine-structure mixing of caesium 6P levels induced by collisions with potassium atoms (CROSBI ID 77155)
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Podaci o odgovornosti
Horvatić, Vlasta ; Vadla, Čedomil ; Movre, Mladen ; Niemax, Kay
engleski
The collision cross sections for the fine-structure mixing of caesium 6P levels induced by collisions with potassium atoms
The cross section for the fine-structure excitation transfer Cs(6P1/2) -> Cs(6P3/2), induced by collisions with the ground state potassium atoms, has been measured by resonant Doppler-free two-photon spectroscopy. The population densities of caesium 6PJ (J = 1/2, 3/2) levels were probed by thermionic detection of the collisionally ionized caesium atoms from the Cs(6PJ) -> Cs(10S1/2) excitation channel. The cross section for the transfer process at the temperature T = 503 K has been found to be sigma(1/2 -> 3/2) = 45*10(-16) cm(2) +- 20%. The result is compared with previously published experimental cross sections for fine-structure transfer in resonance states of other alkali elements perturbed by potassium and a theoretical value of the Li(2PJ) - K system calculated in a simple approach.
cross section ; collisions ; fine-structure mixing ; alkali metals
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Podaci o izdanju
36 (2)
1996.
101-104
objavljeno
0178-7683
10.1007/BF01426623