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Laser Larmor X-ray radiation from low-Z matter

Published online by Cambridge University Press:  01 January 1999

YUTAKA UESHIMA
Affiliation:
Kansai Research Establishment, Japan Atomic Energy Research Institute, 25-1 Mii-mimami, Neyagawa, Osaka 572-0019, Japan
YASUAKI KISHIMOTO
Affiliation:
Kansai Research Establishment, Japan Atomic Energy Research Institute, 25-1 Mii-mimami, Neyagawa, Osaka 572-0019, Japan
AKIRA SASAKI
Affiliation:
Kansai Research Establishment, Japan Atomic Energy Research Institute, 25-1 Mii-mimami, Neyagawa, Osaka 572-0019, Japan
TOSHIKI TAJIMA
Affiliation:
Kansai Research Establishment, Japan Atomic Energy Research Institute, 25-1 Mii-mimami, Neyagawa, Osaka 572-0019, Japan Institution for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 U.S.A.

Abstract

A relativistically intense short laser pulse can produce a large flux of X rays through the interaction with electrons that are driven by its intense electromagnetic fields. Apart from X rays from the high-Z matter irradiation by an intense laser, two main processes, Larmor and Bremsstrahlung radiation, are among the most significant mechanisms for X-ray emission from short-pulse laser irradiation on low-Z matter in the regime of relativistic intensities. We evaluate the power, energy spectrum, brilliance, polarization, and time structure of these X rays. We suggest a few methods that significantly enhance the power of Larmor X rays. Because of the peakedness in the energy spectrum of Larmor X rays, Larmor X rays have important applications.

Type
Research Article
Copyright
© 1999 Cambridge University Press

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