Statistical properties of the photoelectron energy spectrum generated by an intense laser pulse and a continuous X-ray

被引：2
|
作者：
Ge Yu-Cheng [1 ]
Ge Xiang-Jie
He Hai-Ping
机构：
[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 11期
基金：
中国国家自然科学基金;
关键词：
laser intensity; pulse duration; X-ray-boosted photoionization; statistical properties of photoelectron energy spectrum; IONIZATION;
D O I：
10.1088/1674-1056/23/11/114203
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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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页数：7
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