内原子的光电离和空位衰变
Photoionization and vacancy decay of endohedral atoms
摘要：
我们证明了富勒烯壳层在光电离和空位衰变的内嵌原子A@C60中所发挥的作用。它显示，部分在一个相当简单的模型，描述了富勒烯壳的框架，部分只使用的假设上的原子A的小相比，C60的大小，它影响光电离和空位衰减A@C60深刻。也就是说，它导致了一些新的共振在光电离截面和其他光电离特性，以及强烈的修改的空位衰变概率和新的衰变通道的开放。我们讨论了通过C60壳层的光子传播的问题，并得出结论，在任何考虑的频率，高达约60 eV，C60增强入射辐射。这显示了C60中240个集体化电子的非金属介电行为。我们还讨论了C_（60）对快电子非弹性散射的影响。所获得的结果对于C60以外的其他物质，例如C70或C76，也是定性有效的。
英文摘要：
We demonstrate the role played by the fullerene shell in the photoionization and vacancy decay of endohedral atoms A@C60. It is shown, partly in the frame of a rather simple model that describes the fullerene shell, partly using only the assumption on the smallness of the atom A in comparison to the size of C60 that it affects photoionization and the vacancy decay of A@C60 profoundly. Namely, it leads to a number of new resonances in photoionization cross-section and other photoionization characteristics as well as strong modifications of the vacancy decay probabilities and opening of new decay channels. We discuss the problem of photon propagation through the C60 shell and conclude that at any considered frequency, up to about 60 eV, the C60 enhances the incoming radiation. This shows non-metallic dielectric behavior of the 240 collectivized electrons in C60. We discuss also the C60 effects upon the fast electron inelastic scattering. The results obtained are valid qualitatively also for other than C60, e.g. for C70 or C76.
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