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Statistical properties of the photoelectron energy spectrum generated by an intense laser pulse and a continuous X-ray |
| Ge Yu-Cheng (葛愉成), Ge Xiang-Jie (葛湘洁), He Hai-Ping (何海萍) |
| School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China |
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Abstract This study shows that the photoelectron energy spectrum generated by an intense laser pulse in the presence of a continuous X-ray has interesting and useful statistical properties. The total photoionization production is linearly proportional to the time duration of the laser pulse and the square of the beam size. The spectral double energy-integration is an intrinsic value of the laser-assisted X-ray photoionization, which linearly depends on the laser intensity and which quantitatively reflects the strengths of the laser-field modulation and the quantum interference between photoelectrons. The spectral energy width also linearly depends on the laser intensity. These linear relationships suggest new methods for the in-situ measurement of laser intensity and pulse duration with high precision.
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Received: 23 April 2014
Revised: 23 May 2014
Accepted manuscript online:
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PACS:
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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42.50.Ct
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(Quantum description of interaction of light and matter; related experiments)
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42.60.Jf
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(Beam characteristics: profile, intensity, and power; spatial pattern formation)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11175010). |
Corresponding Authors:
Ge Yu-Cheng
E-mail: gyc@pku.edu.cn
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Cite this article:
Ge Yu-Cheng (葛愉成), Ge Xiang-Jie (葛湘洁), He Hai-Ping (何海萍) Statistical properties of the photoelectron energy spectrum generated by an intense laser pulse and a continuous X-ray 2014 Chin. Phys. B 23 114203
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