Accession Number:

ADA002193

Title:

Analyses of X-Ray Laser Approaches: 2. Quasistationary Inversion on K-Alpha Innershell Transitions.

Descriptive Note:

Memorandum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1974-10-01

Pagination or Media Count:

29.0

Abstract:

In search for an x-ray laser scheme capable of operating in a quasi-cw mode, a suggested K alpha-innershell scheme is reexamined 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 need for a more complete numerical model is indicated. 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.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE