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Article

Mechanisms of 1s Double-Core-Hole Excitation and Decay in Neon

by
Maksim D. Kiselev
1,2,3,*,
Elena V. Gryzlova
1,
Sergei M. Burkov
3,
Oleg Zatsarinny
4,† and
Alexei N. Grum-Grzhimailo
1
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
2
Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
3
Laboratory for Modeling of Quantum Processes, Pacific National University, 680035 Khabarovsk, Russia
4
Department of Physics and Astronomy, Drake University, Des Moines, IA 50311, USA
*
Author to whom correspondence should be addressed.
†
Deceased.
Atoms 2021, 9(4), 114; https://doi.org/10.3390/atoms9040114
Submission received: 15 November 2021 / Revised: 9 December 2021 / Accepted: 14 December 2021 / Published: 19 December 2021
(This article belongs to the Special Issue A Tribute to Oleg Zatsarinny (1953–2021) and His Science–Fees Are Waived)
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Abstract

The formation and decay of double-core-hole (DCH) states of the neon ion irradiated by an intense electromagnetic x-ray field are studied theoretically. In the present research DCH formation is the result of sequential absorption of two photons with the creation of an intermediate ion. Detailed calculations of the partial decays and probabilities of shake-ups at the atomic and ionic ionization stages are presented. The angular distribution of photoelectrons corresponding to various residual ionic states are calculated. Specifically, we predict the lack of any photoelectrons corresponding to the residual ionic state 1s12s22pnmpn′2Sf+1D in the direction of the electric field polarization. Dynamical competition between single-core-hole state decay and excitation is analyzed and pulse parameters corresponding to various dynamical regimes are found.
Keywords: photoionization; double-core-hole; R-matrix; multiple ionization; ions; free-electron laser; neon; photoelectron spectroscopy; rate equations photoionization; double-core-hole; R-matrix; multiple ionization; ions; free-electron laser; neon; photoelectron spectroscopy; rate equations

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MDPI and ACS Style

Kiselev, M.D.; Gryzlova, E.V.; Burkov, S.M.; Zatsarinny, O.; Grum-Grzhimailo, A.N. Mechanisms of 1s Double-Core-Hole Excitation and Decay in Neon. Atoms 2021, 9, 114. https://doi.org/10.3390/atoms9040114

AMA Style

Kiselev MD, Gryzlova EV, Burkov SM, Zatsarinny O, Grum-Grzhimailo AN. Mechanisms of 1s Double-Core-Hole Excitation and Decay in Neon. Atoms. 2021; 9(4):114. https://doi.org/10.3390/atoms9040114

Chicago/Turabian Style

Kiselev, Maksim D., Elena V. Gryzlova, Sergei M. Burkov, Oleg Zatsarinny, and Alexei N. Grum-Grzhimailo. 2021. "Mechanisms of 1s Double-Core-Hole Excitation and Decay in Neon" Atoms 9, no. 4: 114. https://doi.org/10.3390/atoms9040114

APA Style

Kiselev, M. D., Gryzlova, E. V., Burkov, S. M., Zatsarinny, O., & Grum-Grzhimailo, A. N. (2021). Mechanisms of 1s Double-Core-Hole Excitation and Decay in Neon. Atoms, 9(4), 114. https://doi.org/10.3390/atoms9040114

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