Shape variation of the two-electron photoionization spectrum with photon energy growth

E. Z. Liverts*, M. Ya Amusia, E. G. Drukarev, R. Krivec, V. B. Mandelzweig

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We trace the evolution of the shape of the two-electron photoionization spectrum with photon energy growth using quite a precise two-electron wave function, obtained by the correlation function hyperspherical harmonic method. We obtain the values of ω 1 and ω 2 at which the spectrum curve changes its shape. At ω=ω 1 the U shape changes to a W shape. At ω=ω 2 the central W peak splits into two. We consider ground states of the helium atom and of heliumlike ions with the nuclear charge Z, the negative ion of hydrogen H -, and the excited n 1S state of helium. The limiting laws for n≫ 1 and n≫ 1 are obtained. The analysis is carried out without calculations of the particular energy distributions themselves.

Original languageEnglish
Article number012715
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume71
Issue number1
DOIs
StatePublished - 1 Jan 2005

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