内六面体的光子吸收和电子散射
Photon absorption and electron scattering by endohedrals
摘要：
我们在这里集中讨论光子吸收以及电子和正电子在由富勒烯壳层和内部原子A组成的内多面体上的散射。目的是了解富勒烯电子壳层在形成相应截面中的作用。我们考虑用静态赝势和动态极化势的组合来代替复杂的多原子富勒烯壳层的作用。在无规相位交换近似（RPAE）框架下，考虑了原子A中的电子关联。我们表明，富勒烯壳强烈影响的横截面，带来了一些特殊性，如限制共振和巨型内共振和分波Ramsauer型极小。对A@C60和A@C60@C240内面体进行了数值计算，其中A为稀有气体原子He，Ar和Ar。
英文摘要：
We concentrate here on photon absorption as well as electron and positron scattering upon endohedrals that consist of a fullerenes shell and an inner atom A. The aim is to understand the effect of fullerene electron shell in formation of corresponding cross-section. We consider the problem substituting the action of a complex multiatomic fullerenes shell by a combination of static pseudopotential and dynamic polarization potential. The electron correlations in the atom A are taken into account in the frame of the random phase approximation with exchange (RPAE). We demonstrate that the fullerenes shell strongly affects the cross-sections, bringing in a number of peculiarities, such as confinement resonances and giant-endohedral resonances and partial wave Ramsauer-type minima. Numerical data are obtained for endohedrals A@C60 and A@C60@C240, where A are noble gas atoms He, Ar and Xe.
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