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Dynamics of the fully stripped ion-hydrogen atom charge exchange process in dense quantum plasmas

机译：致密量子等离子体中完全剥离的离子氢原子电荷交换过程的动力学

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The plasma screening effects of dense quantum plasmas on charge exchange processes of a fully stripped ion colliding with a hydrogen atom are studied by the classical trajectory Monte Carlo method. The inter-particle interactions are described by the exponential cosine-screened Coulomb potentials. It is found that in weak screening conditions, cross sections increase with the increase of the ionic charge Z. However, in strong screening conditions, the dependence of cross sections on the ionic charge is related to the incident particle energy. At high energies, cross sections show a linear increase with the increase of Z, whereas at low energies, cross sections for Z >= 4 become approximately the same. The He2+ and C6+ impacting charge exchange cross sections in dense quantum plasmas are also compared with those in weakly coupled plasmas. The interactions are described by the static screened Coulomb potential. It is found that for both He2+ and C6+, the oscillatory screening effects of dense quantum plasmas are almost negligible in weak screening conditions. However, in strong screening conditions, the oscillatory screening effects enhance the screening effects of dense quantum plasmas, and the enhancement becomes more and more significant with the increase of the screening parameter and the ionic charge. (C) 2014 AIP Publishing LLC.
机译：利用经典轨迹蒙特卡洛方法研究了密集量子等离子体对完全剥离的离子与氢原子碰撞的电荷交换过程的等离子体屏蔽效应。粒子间的相互作用通过余弦筛选的指数库仑势来描述。已经发现，在弱筛选条件下，截面随离子电荷Z的增加而增加。但是，在强筛选条件下，截面对离子电荷的依赖性与入射粒子的能量有关。在高能量下，横截面随Z的增加呈线性增加，而在低能量下，Z> = 4的横截面变得大致相同。还比较了密集量子等离子体中的He2 +和C6 +影响电荷交换的截面与弱耦合等离子体中的截面。相互作用通过静态筛选的库仑势来描述。发现对于He2 +和C6 +，在弱屏蔽条件下，密集量子等离子体的振荡屏蔽效应几乎可以忽略不计。然而，在强屏蔽条件下，振荡屏蔽效应增强了稠密量子等离子体的屏蔽效应，并且随着屏蔽参数和离子电荷的增加，这种增强作用越来越明显。 （C）2014 AIP Publishing LLC。

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