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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 14, Iss. 9 — Sep. 1, 1975
  • pp: 2243–2249

Quasi-stationary population inversion on transitions

R. C. Elton  »View Author Affiliations


Applied Optics, Vol. 14, Issue 9, pp. 2243-2249 (1975)
http://dx.doi.org/10.1364/AO.14.002243


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Abstract

In a search for an x-ray laser capable of operating in a quasi-cw mode, a suggested -innershell scheme is examined using recently calculated rates. This scheme involves the decay of a K-shell vacancy followed by a more rapid (for certain elements) L-vacancy decay, which maintains the inversion. The present analysis indicates that the scheme is only marginally feasible unless a depletion of resonant absorbers is accomplished through line shifts associated with multiple ionization following K-vacancy production. The pumping requirements for overcoming photoionization losses in the beam and the associated gain conditions are estimated for three elements, namely silicon, calcium, and copper, and it is concluded that photoionization pumping in a selective energy band is required, with emission approaching the blackbody level. A multiline heavy-ion plasma source is suggested.

© 1975 Optical Society of America

History
Original Manuscript: November 11, 1974
Published: September 1, 1975

Citation
R. C. Elton, "Quasi-stationary population inversion on Kα transitions," Appl. Opt. 14, 2243-2249 (1975)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-14-9-2243

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