Relaxation of the 4D3/2 and 4D5/2 levels of sodium atom perturbed by noble gases
- 1 January 1978
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 39 (8) , 108-112
- https://doi.org/10.1051/jphyslet:01978003908010800
Abstract
The sodium atom is excited selectively in the 4D3/2 or 4D 5/2 level using Doppler-free two-photon absorption. We analyse the fluorescence in intensity and polarization in presence of noble gas atoms. We measure the cross-sections corresponding to the transfer of population between 4D3/2 and 4D5/2 and between 4D and 4F, the relaxation of alignment in both fine sublevels and the transfer of alignment. In particular, we have observed a transfer of alignment in the case of helium and neon perturbers. These results are compared with semi-classical calculations performed using the potentials of Pascale and VandeplanqueKeywords
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