DocumentCode :
1075523
Title :
Two-photon ionization of helium for 23S and 21S states
Author :
Sharma, R.K. ; Mathur, K.C.
Author_Institution :
University of Roorkee, Roorkee, India
Volume :
15
Issue :
12
fYear :
1979
fDate :
12/1/1979 12:00:00 AM
Firstpage :
1433
Lastpage :
1437
Abstract :
Two-photon ionization of He atom from its excited metastable 
and 
states is studied within the framework of the perturbation theory. Cross sections and ratios for circularly and linearly polarized laser light are obtained in the wavelength ranges 3180-3950 Å and 3650-5100 Å for and states, respectively. The effects of the quasi-resonant intermediate states and the states omitted in the truncated summation method are analyzed.
and states is studied within the framework of the perturbation theory. Cross sections and ratios for circularly and linearly polarized laser light are obtained in the wavelength ranges 3180-3950 Å and 3650-5100 Å for and states, respectively. The effects of the quasi-resonant intermediate states and the states omitted in the truncated summation method are analyzed.Keywords :
Gases; Laser chemistry applications; Absorption; Helium; Ionization; Laser excitation; Laser theory; Laser transitions; Light sources; Metastasis; Resonance; Ultraviolet sources;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1979.1069938
Filename :
1069938
Link To Document :
