中国物理B ›› 2006, Vol. 15 ›› Issue (10): 2363-2367.doi: 10.1088/1009-1963/15/10/029

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Effects of atomic number Z on the energy distribution of hot electrons generated by femtosecond laser interaction with metallic targets

蔡达锋1, 谷渝秋2, 郑志坚2, 周维民2, 焦春晔2, 陈　豪2, 温天舒2, 淳于书泰2   

  1. (1)Department of Physics, Neijiang Teachers College, Neijiang 641112, China;Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China; (2)Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2006-03-01 修回日期:2006-06-01 出版日期:2006-10-20 发布日期:2006-10-20
  • 基金资助:
    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).

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)   

  1. a Department of Physics, Neijiang Teachers College, Neijiang 641112, China; b Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2006-03-01 Revised:2006-06-01 Online:2006-10-20 Published:2006-10-20
  • Supported by:
    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).

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摘要： The effects of atomic number Z on the energy distribution of hot electrons generated by the interaction of 60fs, 130mJ, 800nm, and 7\ti10\sj{17}W/cm\sj{2} 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.

关键词: atomic number, effect, hot electron, energy distribution

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.

Key words: atomic number, effect, hot electron, energy distribution

中图分类号:  (Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))

  • 52.50.Jm