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arXiv · 2506.18117

Two-photon ionization of the K-shell of ions of the isonuclear sequence of a heavy atom

Alexey N. Hopersky·Alexey M. Nadolinsky·Sergey A. Novikov·Rustam V. Koneev
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Abstract

The shape and absolute values of the generalized cross-sections of the two-photon resonant single ionization of the K-shell of ions of the isonuclear sequence of a heavy nickel atom (28Ni - Ni26+ - Ni24+ - Ni18+) have been theoretically predicted. The complete wave functions of ionization states have been obtained in the single-configuration Hartree-Fock approximation. The effects of the occurrence of giant resonances in the subthreshold region of the generalized ionization cross-section and destructive quantum interference of the amplitudes of the probability of radiation transitions have been established. The leading role of the d-symmetry of the final state of ionization in determining the total generalized crosssection in the energy region of absorbed photons in the hard X-ray range has also been established.

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Alexey N. Hopersky, Alexey M. Nadolinsky, Sergey A. Novikov, Rustam V. Koneev. 2025-06-22. Two-photon ionization of the K-shell of ions of the isonuclear sequence of a heavy atom. https://arxiv.org/abs/2506.18117

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