Confinement resonances in photoelectron angular distributions from endohedral atoms

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The dipole and nondipole angular distribution parameters for photoelectrons emitted from the endohedral Ne@C60 atom were investigated within Dirac bubble potential model. It was observed that the energy dependence of the photoelectron angular distribution parameters differ considerably from that of the free Ne atom. It was also observed that the shape of the photoelectron angular distribution coincides with the differential photoionization cross section of an isolated atom. It was found that the parameters, as functions of the photon energy, acquired resonance structures, making them large, owing to the appearance of confinement resonances in the photoionization matrix elements induced by the spherical shell potential of C60.

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Physical Review A - Atomic, Molecular, and Optical Physics

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