"A new method for obtaining the cross section for photoionization of photoexcited cesium is presented. The salient feature of this experiment is to use three crossed beams, i.e., two light beams intersecting a beam of cesium atoms. The cross section is determined by counting the ions produced by the two step process: Cs (6S) + h[upsilon]₁ --> Cs (6P) ; Cs (6P) + [upsilon]₂ --> Cs⁺ + e⁻ The relative cross section for the second step has been obtained from threshold (5060 Å) to 2500 Å. The excitation light source used in obtaining this cross section was a rf resonance lamp, but the possibility of using a GaAs laser as this light source was also investigated. A GaAs laser was thermally tuned to the 6S - 6P transition wavelength in cesium, 8521 Å, and it was found that in this way the hyperfine levels of the ground state of cesium could be selectively depopulated. Although excellent results were obtained in this portion of the study, the low duty cycle of the lasers that we had available made them unsuitable for the photoionization experiment"--Abstract, page ii
Nygaard, Kaare J.
Lund, Louis H., 1919-1998
Levine, Norman E.
Snow, William R.
Anderson, Richard A.
Ph. D. in Physics
University of Missouri--Rolla. Department of Physics
United States. Office of Naval Research
National Science Foundation (U.S.)
University of Missouri--Rolla
Journal article titles appearing in thesis/dissertation
- Selective depopulation of the 6²S[subscript 1/2](F=3)-level in cesium
- Modal behavior and temperature tuning of pulsed room temperature GaAs lasers
vi, 78 pages
© 1971 Robert E. Hebner , Jr., All rights reserved.
Dissertation - Open Access
Library of Congress Subject Headings
Photoionization cross sections
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Hebner, Robert E., "Photoionization of photoexcited cesium" (1971). Doctoral Dissertations. 1845.