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Efficient hard X-ray source using femtosecond plasma at solid targets with a modified surface

Published online by Cambridge University Press:  01 July 2004

S.A. GAVRILOV ,
D.M. GOLISHNIKOV ,
V.M. GORDIENKO ,
A.B. SAVEL'EV  and
R.V. VOLKOV
S.A. GAVRILOV
Affiliation:
International Laser Center and Faculty of Physics, M.V. Lomonosov Moscow State University, Vorob'evy gory, Moscow, Russia Department of Material Science, Moscow Institute of Electronic Technology, Zelenograd, Moscow, Russia
D.M. GOLISHNIKOV
Affiliation:
International Laser Center and Faculty of Physics, M.V. Lomonosov Moscow State University, Vorob'evy gory, Moscow, Russia
V.M. GORDIENKO
Affiliation:
International Laser Center and Faculty of Physics, M.V. Lomonosov Moscow State University, Vorob'evy gory, Moscow, Russia
A.B. SAVEL'EV
Affiliation:
International Laser Center and Faculty of Physics, M.V. Lomonosov Moscow State University, Vorob'evy gory, Moscow, Russia
R.V. VOLKOV
Affiliation:
International Laser Center and Faculty of Physics, M.V. Lomonosov Moscow State University, Vorob'evy gory, Moscow, Russia
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Abstract

Recent results on constructing of an efficient hard X-ray source using solid targets irradiated by high-contrast 200-fs laser pulses with an intensity above 1016 W/cm2 are presented. We used different solid targets with a laser- and electrochemically modified surface layer: craters, pyramidal cavities, porous silicon, gratings. Experimental data obtained confirms that using solid targets with a corrugated surface one can achieve a prominent increase both in the efficiency of hard X-ray generation (in the quanta range 2–30 keV) and in the hot electron temperature of plasma.

Keywords

Femtosecond laser plasmaModified surfaceX-ray source

Information

Type
Research Article
Information
Laser and Particle Beams , Volume 22 , Issue 3 , July 2004 , pp. 301 - 306
Copyright
© 2004 Cambridge University Press

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References

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