Gericke D O, Vorberger J, Wünsch K, Gregori G
Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.
Phys Rev E Stat Nonlin Soft Matter Phys. 2010 Jun;81(6 Pt 2):065401. doi: 10.1103/PhysRevE.81.065401. Epub 2010 Jun 22.
We employ a pseudopotential approach to investigate the screening of ionic cores in partially ionized plasmas. Here, the effect of the tightly bound electrons is condensed into an effective potential between the (free) valence electrons and the ionic cores. Even for weak electron-ion coupling, the corresponding screening clouds show strong modifications from the Debye result for elements heavier than helium. Modifications of the theoretically predicted x-ray scattering signal and implications on measurements are discussed.
我们采用赝势方法来研究部分电离等离子体中离子芯的屏蔽效应。在此，紧密束缚电子的效应被凝聚为（自由）价电子与离子芯之间的有效势。即便对于弱电子 - 离子耦合，对于比氦重的元素，相应的屏蔽云与德拜结果相比也呈现出显著变化。本文讨论了理论预测的X射线散射信号的变化及其对测量的影响。
