Accession Number : ADP007057

Title :   Saturation and Kinetic Issues for Optical-Field-Ionized Plasma X-Ray Lasers,

Corporate Author : LAWRENCE LIVERMORE NATIONAL LAB CA

Personal Author(s) : Eder, D. C. ; Amendt, P. ; Rosen, M. D. ; Nash, J. K. ; Wilks, S. C.

Report Date : 22 MAY 1992

Pagination or Media Count : 5

Abstract : Lasing between excited states and the ground state following optical-field ionization is studied. Saturation of an x-ray laser when the lower lasing level is a ground state of a hydrogen-like or lithium-like ion is discussed. Efficiencies of 0.00001 to 0.00001 are calculated for the 3d5/2 - 2p3/2 transition at 98 A in Li-like neon. The assumption that the fine-structure levels are populated according to their statistical weights is shown to be justified through comparisons with calculations using a detailed atomic model. The effect of saturation by a given fine-structure transition on the populations of the fine-structure levels is analyzed. Optical-field ionization by a high-intensity/short-pulse ultraviolet laser allows the possibility of x-ray lasing between excited states of an ion and the ground state.

Descriptors :   *X RAY LASERS, *COHERENT OPTICAL RADIATION, *ULTRAVIOLET LASERS, PLASMAS(PHYSICS), SHORT WAVELENGTHS, GROUND STATE, COHERENT RADIATION, IONIZATION, SATURATION, SYMPOSIA.

Subject Categories : Optics
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE