OPTICAL-PUMPING OF METASTABLE HELIUM-ATOMS IN POLARIZED ELECTRON SOURCES

Authors
BRISSAUD I
Citation
I. Brissaud, OPTICAL-PUMPING OF METASTABLE HELIUM-ATOMS IN POLARIZED ELECTRON SOURCES, Journal de physique. II, 5(4), 1995, pp. 497-506
Citations number
25
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Mechanics
Journal title
Journal de physique. II → ACNP
ISSN journal
11554312
Volume
5
Issue
4
Year of publication
1995
Pages
497 - 506
Database
ISI
SICI code
1155-4312(1995)5:4<497:OOMHIP>2.0.ZU;2-3
Abstract
In this paper we present a comparison between the Orsay and Rice Unive rsity polarized electron sources. Different explanations of the polari zation degradation are discussed for the two cases. For the Rice sourc e radiation, trapping can account for the observed reduction in polari zation because of the high absorption cross sections associated with t he D-1 transition. Some improvements are proposed that might increase the electron polarization.