物理化学学报 >> 2000, Vol. 16 >> Issue (10): 932-935.doi: 10.3866/PKU.WHXB20001012

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乙酸甲酯在强激光场下的电离

熊轶嘉, 吴成印, 高振, 孔繁敖, 杨晓东, 陆海鹤, 徐至展   

  1. 中国科学院化学研究所分子反应动力学实验室 北京 100080|中国科学院上海光机所强光光学开放研究实验室 上海 201800
  • 收稿日期:2000-01-18 修回日期:2000-03-01 发布日期:2000-10-15
  • 通讯作者: 孔繁敖 E-mail:kong@mrdlab.icas.ac.cn

Ionization of Methyl Acetate in Ultra-intense Lasser Field

Xiong Yi-Jia, Wu Cheng-Yin, Gao Zhen, Kong Fan-Ao, Yang Xiao-Dong, Lu Hai-Ou, Xu Zhi-Zhan   

  1. State Key Laboratory of Molecular Reaction Dynamics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080|Laboratory for High Intensity Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800
  • Received:2000-01-18 Revised:2000-03-01 Published:2000-10-15
  • Contact: Kong Fan-Ao E-mail:kong@mrdlab.icas.ac.cn

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关键词: 乙酸甲酯, 飞秒激光, 隧道电离, Keldysh因子

Abstract:

The tunneling ionization of methyl acetate in the laser intensity range of 4.8× 1013 W• cm－2 to 1.3×1014 W•cm－2 was studied. The modified Keldysh parameter was calculated by the ab initio method. The tunneling probability was calculated by the WKB method. When the laser intensity was larger than 1014 W• cm－ 2,methyl acetate mainly took tunneling ionization mechanism. When the laser intensity was lower than 1014 W•cm－2 multiphoton ionization occurred.

Key words: Methyl aceltate, Tunneling ionization, Femtosecond laser, Keldysh parameter