Effect of laser wavelength and intensity on the divergence of hot electrons in fast ignition

Recently, the short wavelength laser is believed to have a promising prospect in fast ignition for reducing the conflict between laser energy requirement and electron stopping range. Here we investigate the influence of laser wavelength and intensity in the angular dispersion of hot electrons. Both...

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Published in:Physics of plasmas 2016-09, Vol.23 (9)
Main Authors: Li, Boyuan, Tian, Chao, Zhang, Zhimeng, Zhang, Feng, Shan, Lianqiang, Zhang, Bo, Zhou, Weimin, Zhang, Baohan, Gu, Yuqiu
Format: Article
Language:English
Subjects:
Computer simulation
Divergence
Electrons
Hot electrons
Ignition
Lasers
Mathematical models
Plasma physics
Weibel instability
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description Recently, the short wavelength laser is believed to have a promising prospect in fast ignition for reducing the conflict between laser energy requirement and electron stopping range. Here we investigate the influence of laser wavelength and intensity in the angular dispersion of hot electrons. Both our theoretical model and numerical simulations show that the angular dispersion would increase rapidly with the shortening of laser wavelength due to the Weibel instability, while the laser intensity has little effect on it. These results have important implications for fast ignition.
doi_str_mv 10.1063/1.4963255
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subjects Computer simulation
Divergence
Electrons
Hot electrons
Ignition
Lasers
Mathematical models
Plasma physics
Weibel instability
title Effect of laser wavelength and intensity on the divergence of hot electrons in fast ignition
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