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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Atomic transport collisions with Lorentzian electron distribution: Nonthermal shielding
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Atomic transport collisions with Lorentzian electron distribution: Nonthermal shielding

机译：具有洛伦兹电子分布的原子传输碰撞：非热屏蔽

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摘要

The nonthermal plasma screening effects on the electron-atom transport collision are investigated in partially ionized Lorentzian plasmas. The effective polarization potential and partial-wave theory are applied to obtain the scattering phase shift and transport cross section as functions of the spectral index, collision energy, Debye length and polarizability. The result shows that the nonthermal plasma screening effect suppresses the scattering phase shift as well as the transport cross section in the low-energy domain. It is found that the nonthermal plasma screening effect on the diffusion cross section decreases with an increase of the collision energy. In addition, the nonthermal plasma shielding effects on the excited states are found to be more significant than those on the ground state of the target atom in Lorentzian plasmas. It is also found that the nonthermal screening effect on the 2p state is more significant than that on the 2s state.
机译：在部分电离的洛伦兹等离子体中研究了非热等离子体筛选对电子-原子传输碰撞的影响。应用有效极化电势和分波理论，得到了散射相移和传输截面，它是光谱指数，碰撞能量，德拜长度和极化率的函数。结果表明，非热等离子体屏蔽效应抑制了低能域中的散射相移以及传输截面。结果发现，随着碰撞能量的增加，等离子体对扩散截面的非热屏蔽作用减小。另外，发现在洛伦兹等离子体中对激发态的非热等离子体屏蔽效应比对目标原子的基态的非热等离子体屏蔽效应更为显着。还发现对2p状态的非热屏蔽作用比对2s状态的非热屏蔽作用更显着。

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