Hagelaar G J M, Donko Z, Dyatko N
LAPLACE, University of Toulouse, CNRS, 118 Route de Narbonne, 31062 Toulouse, France.
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, P.O. Box 49, H-1525 Budapest, Hungary.
Phys Rev Lett. 2019 Jul 12;123(2):025004. doi: 10.1103/PhysRevLett.123.025004.
We demonstrate that in partially ionized plasmas, Coulomb scattering can be significantly perturbed by electron collisions with neutral gas particles, and that this effect can be incorporated in the Coulomb collision terms of the Boltzmann equation by a modification of the classical Coulomb logarithm. We show that Boltzmann transport calculations using this modified Coulomb logarithm are in excellent agreement, for a sensitive model problem and a wide range of conditions, with particle simulations describing the many-body Coulomb interactions from first principles.
我们证明，在部分电离的等离子体中，电子与中性气体粒子的碰撞会显著干扰库仑散射，并且通过修改经典库仑对数，可以将这种效应纳入玻尔兹曼方程的库仑碰撞项中。我们表明，对于一个敏感的模型问题和广泛的条件，使用这种修改后的库仑对数进行的玻尔兹曼输运计算与从第一原理描述多体库仑相互作用的粒子模拟结果非常吻合。
