Effects of atomic number Z on the energy distribution of hot electrons generated by femtosecond laser interaction with metallic targets
Cai Da-Feng(蔡达锋)a)b)†, Gu Yu-Qiu(谷渝秋)b), Zheng Zhi-Jian(郑志坚)b), Zhou Wei-Min(周维民)b), Jiao Chun-Ye(焦春晔)b), Chen Hao(陈豪)b), Wen Tian-Shu(温天舒)b), and Chunyu Shu-Tai(淳于书泰)b)
a Department of Physics, Neijiang Teachers College, Neijiang 641112, China; b Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
Abstract The effects of atomic number Z on the energy distribution of hot electrons generated by the interaction of 60fs, 130mJ, 800nm, and $7\times10^{17}$W/cm2 laser pulses with metallic targets have been studied experimentally. The results show that the number and the effective temperature of hot electrons increase with the atomic number Z of metallic targets, and the temperature of hot electrons are in the range of 190--230keV, which is consistent with a scaling law of hot electrons temperature.
Received: 01 March 2006
Revised: 01 June 2006
Accepted manuscript online:
PACS:
52.50.Jm
(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10275056) and the Science and Technology Office of Sichuan, China (Grant 04JY029-097).
Cite this article:
Cai Da-Feng(蔡达锋), Gu Yu-Qiu(谷渝秋), Zheng Zhi-Jian(郑志坚), Zhou Wei-Min(周维民), Jiao Chun-Ye(焦春晔), Chen Hao(陈豪), Wen Tian-Shu(温天舒), and Chunyu Shu-Tai(淳于书泰) Effects of atomic number Z on the energy distribution of hot electrons generated by femtosecond laser interaction with metallic targets 2006 Chinese Physics 15 2363
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