Journal article
Rearrangement of electron shells and interchannel interaction in the K photoabsorption of Ne



Publication Details
Authors:
Novikovskiy, N.; Rezvan, D.; Ivanov, N.; Petrov, I.; Lagutin, B.; Knie, A.; Ehresmann, A.; Demekhin, P.; Sukhorukov, V.
Publication year:
2019
Journal:
The European Physical Journal D
Pages range:
29
Volume number:
73
Issue number:
2
Languages:
English

Abstract

A detailed theoretical analysis of the 1s photoionization of neon is presented. It is found that the most significant many-electron correlation in computing photoionization of inner shells is the rearrangement of the outer shells caused by the inner vacancy. Further noticeable effects are: (i) the polarization of the ion core by the outgoing photoelectron and (ii) the coherent effect of double excitation/ionization. The core polarization increases the photoionization cross section by about 10% at the 1s threshold, and the coherent excitation results in further increases by about 5%. Incoherent excitation of the satellite channel leads to an additional 10% increase in the photoabsorption cross section in the double-ionization threshold region. 


Last updated on 2019-08-03 at 15:23