Electronic Resource
Springer
The European physical journal
209 (1968), S. 478-496
ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Variations of the number densities of excited Neon 2p 4 and 3s 2 levels were induced by interaction of a low pressure Ne or He-Ne discharge with the linearly polarized 633 nm light of a He-Ne gas laser. They are associated with partial alignment of those atoms having undergone a stimulated transition and consequently with anisotropy and polarization of the spontaneous radiation emitted by the discharge. From its gradual decrease at increasing pressure, depolarization cross sections ofQ Ne*−Ne * =(157±12) Å2 andQ Ne*−He * =(63±7) Å2 at mean relative velocity are derived. Comparison with values calculated by application of an adiabatic theory including sudden approximation yields good agreement in the case of Ne*-He interaction and a discrepancy of 35% in the case of Ne*-Ne interaction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01380554
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