温稠密铜中电子 - 离子弛豫的测量
Measurement of Electron-Ion Relaxation in Warm Dense Copper.
作者信息
Cho B I, Ogitsu T, Engelhorn K, Correa A A, Ping Y, Lee J W, Bae L J, Prendergast D, Falcone R W, Heimann P A
机构信息
Center for Relativistic Laser Science, Institute for Basic Science (IBS), Gwangju, 500-712, Korea.
Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Korea.
出版信息
Sci Rep. 2016 Jan 6;6:18843. doi: 10.1038/srep18843.
Experimental investigation of electron-ion coupling and electron heat capacity of copper in warm and dense states are presented. From time-resolved x-ray absorption spectroscopy, the temporal evolution of electron temperature is obtained for non-equilibrium warm dense copper heated by an intense femtosecond laser pulse. Electron heat capacity and electron-ion coupling are inferred from the initial electron temperature and its decrease over 10 ps. Data are compared with various theoretical models.
本文介绍了对处于热密状态的铜的电子-离子耦合和电子热容量的实验研究。通过时间分辨X射线吸收光谱法，获得了由强飞秒激光脉冲加热的非平衡热密铜中电子温度的时间演化。从初始电子温度及其在10皮秒内的下降推断出电子热容量和电子-离子耦合。将数据与各种理论模型进行了比较。
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