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- Title
Generation of characteristic x rays by a terawatt femtosecond chromium-forsterite laser.
- Authors
Agranat, M. B.; Andreev, N. E.; Ashitkov, S. I.; Ovchinnikov, A. V.; Sitnikov, D. S.; Fortov, V. E.; Shevel'ko, A. P.
- Abstract
Characteristic K α x rays arising when a metallic target is irradiated by femtosecond infrared pulses that are generated by a terawatt chromium-forsterite laser system (1240 nm, 90 mJ, 80 fs) are studied. The absolute yield (up to 3 × 108 photons/sr pulse) and the coefficient of the transformation of laser radiation to K α radiation (maximum value ≈0.03%) are measured for an iron target. The dependence of the radiation intensity on the angle of incidence of p polarized laser radiation is analyzed. The mechanisms of the production of fast electrons responsible for generating characteristic x rays are discussed.
- Subjects
LASER beams; ELECTRONS; CONSTITUTION of matter; PARTICLES (Nuclear physics); LEPTONS (Nuclear physics); ATOMS
- Publication
JETP Letters, 2006, Vol 83, Issue 2, p72
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364006020068