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Journal Articles Journal of Electron Spectroscopy and Related Phenomena Year : 2020

Theoretical simulation of K − 2 V inner-shell processes in Ne and Ar

Abstract

Photoelectron spectra associated to the formation of K−2V double core hole states following single photon ab- sorption have been simulated in gas phase for Neon and Argon. The spectra are dominated by 1s−2ns1 direct lines and 1s−2np1 conjugate lines (n = 3 for Ne; n = 4 for Ar) which have similar intensities. Very weak theoretical cross-sections are found in Argon at the K−2V-Ar edge, fifty times lower than those for Neon at the K−2V-Ne edge. The comparative use of a magnetic bottle coincidence technique on one side and a hard X-ray spectrometer synchrotron device at high photon flux on the other side is suggested, in order to record reasonable signals and to disentangle K−2V conjugate and direct quantum paths. The origin in K−2V of balanced direct/conjugate con- tributions and weak cross-sections is discussed in comparison with K−1 single core hole (X-ray ionization, X-ray absorption) photoelectron spectra characteristics.

Dates and versions

hal-03935021 , version 1 (11-01-2023)

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S. Carniato. Theoretical simulation of K − 2 V inner-shell processes in Ne and Ar. Journal of Electron Spectroscopy and Related Phenomena, 2020, 239, pp.146931. ⟨10.1016/j.elspec.2019.146931⟩. ⟨hal-03935021⟩
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