Quantum dynamic screening effects on the elastic collisions in strongly coupled semiclassical plasmas
Quantum dynamic screening effects on the elastic collisions in strongly coupled semiclassical plasmas
复制标题
量子动态筛选对强耦合半经典等离子体弹性碰撞的影响
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Young
中科院分区：
文献类型：
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作者：
Chang;Young
研究了强耦合半经典等离子体中弹性电子-离子碰撞的量子动态屏蔽效应。采用冲击参数法进行二阶对角分析，得到了与冲击参数、碰撞能量、热能、德布罗意波长和德拜长度有关的对角相移和对角截面。结果表明，随着热能的增加，斜向相移的幅度减小。随着碰撞能量的减小，微分斜截面的最大位置逐渐远离碰撞中心。总斜交随德布罗意波长的增加而减小，特别是在碰撞能量大的情况下。此外，还发现热效应抑制了总斜向截面。
The quantum dynamic screening effects on the elastic electron-ion collisions are investigated in strongly coupled semiclassical plasmas. The second-order eikonal analysis with the impact parameter method is applied to obtain the eikonal phase shift and eikonal cross section as functions of the impact parameter, collision energy, thermal energy, de Broglie wavelength, and Debye length. The result shows that the magnitude of the eikonal phase shift decreases with increasing thermal energy. It is also found that the maximum position of the differential eikonal cross section is receded from the collision center with decreasing collision energy. It is also found that the total eikonal cross decreases with increasing de Broglie wavelength, especially for large collision energies. In addition, it is found that the thermal effect suppresses the total eikonal cross section.