Laser intensity effects on forward hot electrons in interaction with Al foil

zhang miao; wang chen; fang zhi-heng; wang rui-rong; fu si-zu; gu yuan; lin zun-qi

Volume 17 Issue 11

Nov. 2005

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Article Navigation > High Power Laser and Particle Beams > 2005 > 17(11): 0-

peng chang xian, tan hong mei, lin peng, et al. Experimental studies of blowoff impulse in materials irradiated by pulsed soft Xray[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

zhang miao, wang chen, fang zhi-heng, et al. Laser intensity effects on forward hot electrons in interaction with Al foil[J]. High Power Laser and Particle Beams, 2005, 17.

peng chang xian, tan hong mei, lin peng, et al. Experimental studies of blowoff impulse in materials irradiated by pulsed soft Xray[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

zhang miao, wang chen, fang zhi-heng, et al. Laser intensity effects on forward hot electrons in interaction with Al foil[J]. High Power Laser and Particle Beams, 2005, 17.

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Laser intensity effects on forward hot electrons in interaction with Al foil

1.
National Laboratory on High Power Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,P.O.Box 800-211,Shanghai 201800,China

Publish Date: 2005-11-25

Abstract

Abstract

The characteristics of the forward hot electrons produced by 20 TW p-polarized picosecond laser-plasma interactions are studied at laser intensities from subrelativistic to relativistic. The spatial distribution of forward hot electrons is multi-peak distribution, as laser intensity is under 107 W/cm2. When laser intensity is between 1017 and 1018 W/cm2, the peak of the hot electron beam is along the target normal direction. The peak of the hot electron beam shifts to the laser propagation direction from the target normal direction as the laser intensity reaches the relativistic. The temperature of hot electrons fit resonance absorption scaling law as the laser intensity under the relativistic. The temperature of hot electrons is much higher than that expected by the empirical scaling law
- piconsecond laser pulse,
- al foil target,
- fast electron,
- angular distribution,
- energy spectra

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