STUDY OF COMPACT X-RAY LASER PUMPED BY A PULSE-TRAIN LASER

Naohiro Yamaguchi, Chiemi Fujikawa and Tamio Hara
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Naohiro Yamaguchi: Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468–8511, Japan
Chiemi Fujikawa: Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468–8511, Japan
Tamio Hara: Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468–8511, Japan

Surface Review and Letters (SRL), 2002, vol. 09, issue 01, 635-639

Abstract: An advanced experiment has been performed to improve X-ray laser output in the recombination plasma scheme. Two 11-mm-long plasmas were produced by laser irradiation so that each axis aligned into a line consisting the double-target configuration. X-ray intensity of the 15.47 nm transition line of the Li-like Al ion was enhanced in the double-target scheme. A half-cavity experiment in the double-target configuration was also performed, and the enhancement of X-ray was also observed. The results in the half-cavity experiment were consistent with an estimation, where the two plasmas having positive gain contribute to amplify X-rays passing through plasmas and reflecting from the multilayer mirror. Measurements have been started to clarify spatial coherence of the lasing X-ray beam by using the dispersing coherent diagnostic system.

Date: 2002
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DOI: 10.1142/S0218625X02002762

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