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The hard X-ray continuum from intense ultrashort KrF laser–solid interaction

Published online by Cambridge University Press:  05 August 2002

Y.Z. TAO
Affiliation:
China Institute of Atomic Energy, P.O. Box 275-7, Beijing 102413, China
N.Y. WANG
Affiliation:
China Institute of Atomic Energy, P.O. Box 275-7, Beijing 102413, China
Y.S. SHAN
Affiliation:
China Institute of Atomic Energy, P.O. Box 275-7, Beijing 102413, China
Y.J. LI
Affiliation:
China Institute of Atomic Energy, P.O. Box 275-7, Beijing 102413, China
X.Z. TANG
Affiliation:
China Institute of Atomic Energy, P.O. Box 275-7, Beijing 102413, China
H.F. ZHANG
Affiliation:
China Institute of Atomic Energy, P.O. Box 275-7, Beijing 102413, China

Abstract

The hard X-ray (>30 keV) continuum from the interaction of a Ti:sapphire/KrF intense femtosecond UV laser (50 mJ, 440 fs, 10 Hz at 248 nm) with a solid has been measured; the intensity on the target is up to 1017 W/cm2. The X-ray with energy of 200 keV has been observed; the temperature of the hot electron from fitting the spectrum utilizing Maxwellian distribution is 67 keV. This is the first measurement of hard X-rays from femtosecond KrF laser–solid interaction.

Type
Research Article
Copyright
© 2002 Cambridge University Press

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