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.
Received: 09 November 1999
Revised: 29 December 1999
Accepted manuscript online:
Fund: 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).
Cite this article:
Chen Bao-zhen (陈宝振) ENERGETIC ABOVE-THRESHOLD IONIZATION SPECTRA OF H-ATOM IN INTENSE LASER FIELDS 2000 Chinese Physics 9 351
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