内原子的巨共振
Giant resonances of endohedral atoms
摘要：
我们证明了第一次，富勒烯壳后的“笼”原子的光电离的影响，在一个内包体可以导致在形成的巨型内包体共振或GER. This是由具体的情况下Xe@C60光电离截面，表现出在17 eV的一个强大的共振与总振子强度约为25。Xe@C60的5 p6电子光电离截面的显著改变是由于在入射电磁波的作用下富勒烯壳层的强极化以及由于C60对来自富勒烯的光电子的反射而引起的该截面的振荡。这两个因素将Xe的5 p6横截面平滑下降转化为一个相当复杂的曲线，其中Xe@C60具有强大的最大值，振子强度等于25！我们还提出了偶极角各向异性参数的结果，强烈影响的光电子波的反射，但不修改C60极化。C60的偏振通过其总光吸收截面来表示。考虑了光电子的反射，在所谓的气泡势的框架下，这是一个球形的δ型势。
英文摘要：
We demonstrate for the first time that the effect of fullerene shell upon photoionization of the "caged" atom in an endohedral can result in formation of Giant Endohedral Resonances or GER. This is illustrated by the concrete case of Xe@C60 photoionization cross-section that exhibits at 17 eV a powerful resonance with total oscillator strengths of about 25. The prominent modification of the 5p6 electron photoionization cross-section of Xe@C60 takes place due to strong fullerene shell polarization under the action of the incoming electromagnetic wave and oscillation of this cross-section due to the reflection of the photoelectron from Xe by the C60. These two factors transform the smoothly decreasing 5p6 cross-section of Xe into a rather complex curve with a powerful maximum for Xe@C60, with the oscillator strength being equal to 25! We present also the results for the dipole angular anisotropy parameter that is strongly affected by the reflection of the photoelectron waves but not modified by C60 polarization. The polarization of C60 is expressed via its total photoabsorption cross-section. The reflection of the photoelectron is taken into account in the frame of the so-called bubble potential that is a spherical delta-type potential.
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