Spin-dependent, Optogalvanic Effects Of Laser-pumpedhe(2³s1)atoms
Abstract
We have observed changes in the conductivity of a helium radio-frequency discharge when the helium metastableatoms are excited with an IR, tunable laser at the resonance wavelength. The plasma conductivity is a function ofthe electron density in the cell and is modified by either of two collisional processes: Hem + e → He+ + 2e or Hem+Hem→ He+ + He + e. The first case is observed byvarying the intensity of the resonantlaser light, thus varying themetastable density. In the second case, the cross section for the reaction is modulated by varying the spinpolarization of the metastable atoms by optical pumping. © 1989, Optical Society of America.
Recommended Citation
L. D. Schearer and P. Tin, "Spin-dependent, Optogalvanic Effects Of Laser-pumpedhe(2³s1)atoms," Journal of the Optical Society of America B: Optical Physics, vol. 6, no. 10, pp. 1771 - 1773, Optica, Jan 1989.
The definitive version is available at https://doi.org/10.1364/JOSAB.6.001771
Department(s)
Physics
International Standard Serial Number (ISSN)
0740-3224
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 Optica, All rights reserved.
Publication Date
01 Jan 1989
