X-ray and fast ion generation from metal targets by femtosecond laser irradiation

被引：11
作者：
Okano, Y [1 ]
Kishimura, H [1 ]
Hironaka, Y [1 ]
Nakamura, KG [1 ]
Kondo, K [1 ]
机构：
[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
来源：
APPLIED SURFACE SCIENCE | 2002年 / 197卷
关键词：
femtosecond laser; X-ray generation; fast ions;
D O I：
10.1016/S0169-4332(02)00383-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
X-ray and fast ion generation has been studied by femtosecond laser irradiation (52 fs, 790 nm) on metal targets (copper and iron), where hard X-ray emission takes place at power density up to 10(17) W/cm(2). X-ray intensities and kinetic energy distributions of ions are observed as a function of the power density. The ion energy distributions for each target show several peak components, which are fast ions (high-energy component in keV range), and additional low-energy component (a few hundreds of eV). Average fast ion energies show a strong dependence on the power density, and are comparable to ponderomotive potential. (C) 2002 Elsevier Science B.V All rights reserved.
引用
收藏
页码：281 / 284
页数：4
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