中国物理B ›› 2000, Vol. 9 ›› Issue (5): 351-352.doi: 10.1088/1009-1963/9/5/007

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ENERGETIC ABOVE-THRESHOLD IONIZATION SPECTRA OF H-ATOM IN INTENSE LASER FIELDS

陈宝振   

  1. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China
  • 收稿日期:1999-11-09 修回日期:1999-12-29 出版日期:2000-05-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 19784001), the National High-Tech ICF Committee of China and the Research Fund for Doctoral Program of Higher Education (Grant No. 98002713).

ENERGETIC ABOVE-THRESHOLD IONIZATION SPECTRA OF H-ATOM IN INTENSE LASER FIELDS

Chen Bao-zhen (陈宝振)   

  1. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China
  • Received:1999-11-09 Revised:1999-12-29 Online:2000-05-15 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 19784001), the National High-Tech ICF Committee of China and the Research Fund for Doctoral Program of Higher Education (Grant No. 98002713).

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摘要： The above-threshold ionization (ATI) spectra of H-atom in intense laser fields (laser intensity I is up to 1018W/cm2) are calculated. It is found that the kinetic energy of the ejected electron at the location of the peak of the ATI spectra is about equal to the corresponding ponderomotive potential of the applied laser fields. This result is consistent with that obtained by Wilks et al. and fits the experimental results of the super thermal electron. A possible new mechanism of the super thermal electron generation is proposed.

Abstract: The above-threshold ionization (ATI) spectra of H-atom in intense laser fields (laser intensity I is up to 1018W/cm2) are calculated. It is found that the kinetic energy of the ejected electron at the location of the peak of the ATI spectra is about equal to the corresponding ponderomotive potential of the applied laser fields. This result is consistent with that obtained by Wilks et al. and fits the experimental results of the super thermal electron. A possible new mechanism of the super thermal electron generation is proposed.

中图分类号:  (Photoionization of atoms and ions)

  • 32.80.Fb
52.38.-r (Laser-plasma interactions)