Inner-shell photo-ionized x-ray laser schemes
- Lawrence Livermore National Lab., CA (United States)
- California Univ., Berkeley, CA (United States)
Current x-ray lasers operate in the 35 to 500 [Angstrom] wavelength regimes with 21.5 A being the limit for the successful collisional excitation approach using Nickel-like ions. In this paper, we discuss an x-ray laser scheme in the 5 to 15 [Angstrom] regime. The scheme uses an ultra-short (100 fsec FWHM) intense (10[sup 17] Watts/cm[sup 2]) laser pulse to produce a hot plasma at a laser line focus. This plasma serves as an x-ray source that photo-ionizes the K shell of a nearby concentration of lasant atoms. This produces a population inversion, and resulting positive gain for an allowed 2p-1s radiative transition in the singly charged ion. This x-ray laser scheme has been studied for a number of years with some recent work by Kapteyn. There are three major differences between this work and that of Kapteyn. First, a two temperature black body is used in the kinetic calculation to model the ionizing s as compared to a single temperature model Second, the modeled s is obtained directly from simulations of the x-ray source using a target material with x-ray spectra matched to the particular lasant material. Third, the effect of excitation in Hydrogen, which is added to the lasant material to slow down energetic electrons, is included in addition to the effect of ionization of Hydrogen discussed by Kapteyn.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6887421
- Report Number(s):
- UCRL-JC-110956; CONF-930159-19; ON: DE93009285
- Resource Relation:
- Conference: OE/LASE '93: International Society for Optical Engineering (SPIE) conference, Los Angeles, CA (United States), 16-23 Jan 1993
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
74 ATOMIC AND MOLECULAR PHYSICS
X-RAY LASERS
ENERGY-LEVEL TRANSITIONS
AUGER EFFECT
INNER-SHELL IONIZATION
LASER-PRODUCED PLASMA
PHOTOIONIZATION
IONIZATION
LASERS
PLASMA
426002* - Engineering- Lasers & Masers- (1990-)
664100 - Theory of Electronic Structure of Atoms & Molecules- (1992-)