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arXiv 0811.1499physics.atm-clus
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内原子的动力学屏蔽

Dynamical screening of an endohedral atom

S Lo, A V Korol, A V Solov'yov

摘要:

目前的工作是在[1]中提出的动力学屏蔽因子的推广,以考虑位于富勒烯内任意位置的原子。对原子位于中心的情况进行了更详细的研究,并与Ar@C $_{60}$ [2]和Mg@C $_{60}$ [3]的动力学屏蔽因子的量子力学计算进行了比较。的$π$和$σ$的富勒烯等离子体占在一个修改的屏蔽因子,以提高对应的量子计算。用Ar@C $_{60}$和Ar@C $_{240}$探索了屏蔽因子的空间依赖性,发现其显著依赖于原子距富勒烯中心的径向距离。提出了筛选因子的空间平均值。

英文摘要:

The present work is a generalisation of the dynamical screening factor presented in [1] to consider an atom located at an arbitrary position within the fullerene. A more elaborated investigation into the case where the atom is located at the centre is performed and compared with quantum mechanical calculations for dynamical screening factor of Ar@C$_{60}$ [2] and Mg@C$_{60}$ [3]. The $π$ and $σ$ plasmons of the fullerene are accounted for in a modified screening factor to improve correspondence with the quantum calculations. The spatial dependence of the screening factor was explored with Ar@C$_{60}$ and Ar@C$_{240}$ and found to depend significantly on the radial distance of the atom from the centre of the fullerene. A spatial averaging of the screening factor is presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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