Open AccessExperimental study on energy distribution of the hot electrons generated by femtosecond laser interacting with solid targets
Author(s) -
Yu Gu,
Cai Da-Feng,
Zheng Zhi-Jian,
Xiangdong Yang,
Weimin Zhou,
Chen Jiao,
Hao Chen,
Tao Wen,
Chunyu Shutai
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.186
Subject(s) - femtosecond , laser , specular reflection , electron , atomic physics , materials science , hot electron , absorption (acoustics) , reflection (computer programming) , anisotropy , resonance (particle physics) , electron temperature , optics , molecular physics , physics , quantum mechanics , computer science , programming language
This paper reports the results of the experiment of hot electron energy distribution during the femtosecond laser-solid target interaction. The hot electrons formed an anisotropic energy distribution. In the direction of the target normal, the energy spectrum of the hot electron was a Maxwellian-like distribution with an effective temperature of 206keV, which was due to the resonance absorption. In the direction of the specular reflection of laser, there appeared a local plateau of hot electron energy spectrum at the beginning and then it was decreased gradually, which maybe produced by several acceleration mechanisms. The effective temperature and the yield of hot electrons in the direction of the target normal is larger than those in the direction of the specular reflection of laser, which proves that the resonance absorption mechanism is more effective than others.