Effects of the fullerene (C60) potential and position of the atom (A) on spectral characteristics of endohedral atoms A@C60

被引：23

作者：

Baltenkov, A. S. ^{[1
]}

Becker, U. ^{[2
]}

Manson, S. T. ^{[3
]}

Msezane, A. Z. ^{[4
]}

机构：

[1] Arifov Inst Elect, Tashkent 100125, Uzbekistan

[2] Fritz Haber Inst Max Planck Gesell, D-14195 Berlin, Germany

[3] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA

[4] Clark Atlanta Univ, Ctr Theoret Studies Phys Syst, Atlanta, GA 30314 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 11期

关键词：

PHOTOIONIZATION CROSS-SECTIONS; RESONANCES;

D O I：

10.1088/0953-4075/43/11/115102

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Within the framework of a model representing the potential of a C-60 cage as a spherical electro-neutral layer U(r) formed by smeared carbon atoms, the effect of the details of the potential on spectral characteristics of atoms localized inside the fullerene shell has been studied. Using examples of encapsulated H and He atoms, it is shown that for potential shell thickness not exceeding 1.3-1.5 au, confinement resonance oscillations in the photoionization cross section weakly depend on the shape of the function U(r). With increasing width of the potential well, the confinement resonances in the energy dependence of the photoionization cross section disappear. In addition, it is demonstrated that displacing the doped atom from the centre of the cavity also diminishes the amplitude of the confinement resonance.

引用

页数：9

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