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arXiv · 1402.2348

Attosecond time delay in the photoionization of endohedral atoms A@C$_{60}$: A new probe of confinement resonances

P. C. Deshmukh·A. Mandal·S. Saha·A. S. Kheifets·V. K. Dolmatov·S T Manson
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Abstract

The effects of confinement resonances on photoelectron group delay (Wigner time delay) following ionization of an atom encapsulated inside a C$_{60}$ cage have been studied theoretically using both relativistic and non-relativistic random phase approximations. The results indicate clearly the resonant character of the confinement oscillations in time delay of the $4d$ shell of Xe@C$_{60}$ and present a most direct manifestation of Wigner time delay. These oscillations were missed in a previous theoretical investigation of Ar@C$_{60}$ [PRL 111, 203003 (2013)]

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P. C. Deshmukh, A. Mandal, S. Saha, A. S. Kheifets, V. K. Dolmatov, S T Manson. 2014-02-11. Attosecond time delay in the photoionization of endohedral atoms A@C$_{60}$: A new probe of confinement resonances. https://doi.org/10.1103/physreva.89.053424

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