X-Ray Sources Generated from Gas-Filled Laser-Heated Targets.

Back, C. A. ; Grun, J. ; Decker, C. D. ; Davis, J. ; Laming, J. M. ; Feldman, U.

Technical Information Center Oak Ridge Tennessee

关键词: Targets;    Laser radiation heating;    X-ray sources;    Laser targets;    Laser-produced plasma;   

RP-ID  :  DE200515013187

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The X-ray sources in the 4-7 keV energy regime can be produced by laser-irradiating high-Z gas-filled targets with high-powered lasers. A series of experiments have been performed using underdense targets that are supersonically heated with approx. 35 W of 0.35 um laser light. These targets were cylindrical Be enclosures that were filled with 1-2 atms of Xe gas. L-shell x-ray emission is emitted from the plasma and detected by Bragg crystal spectrometers and x-ray diodes. Absolute flux measurements show conversion efficiencies of approx. 10% in the multi-kilovolt x-ray emission. These sources can be used as bright x-ray backlighters or for material testing.