Study of hot electrons by measurement of optical emission from the rear surface of a metallic foil irradiated with ultraintense laser pulse.
Study of hot electrons by measurement of optical emission from the rear surface of a metallic foil irradiated with ultraintense laser pulse.
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DOI：
10.1103/physrevlett.92.165001
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发表时间：
2004-04
影响因子：
8.6
通讯作者：
Jian Zheng;Kazuo A. Tanaka;Tetsuya Sato;T. Yabuuchi;T. Kurahashi;Y. Kitagawa;R. Kodama;T. Norimatsu-T
中科院分区：
文献类型：
--
作者：
Jian Zheng;Kazuo A. Tanaka;Tetsuya Sato;T. Yabuuchi;T. Kurahashi;Y. Kitagawa;R. Kodama;T. Norimatsu-T
热电子和光发射是从金属箔的后表面测量的。在近红外区域的光发射光谱在入射激光脉冲的波长附近具有尖锐的尖峰。光发射归因于热电子束中的微聚束引起的相干跃迁辐射。发现光发射与共振吸收加速的超热电子密切相关。
Hot electrons and optical emission are measured from the rear surface of a metallic foil. The spectra of the optical emission in the near infrared region have a sharp spike around the wavelength of the incident laser pulse. The optical emission is ascribed to coherent transition radiation due to microbunching in the hot electron beam. It is found that the optical emission closely correlates with the hot electrons accelerated in resonance absorption.