TY - JOUR
T1 - Valence-shell double photoionization of alkaline-earth-metal atoms
AU - Kheifets, A. S.
AU - Bray, Igor
PY - 2007/4/11
Y1 - 2007/4/11
N2 - We apply the convergent close-coupling formalism to describe direct double photoionization (DPI) of the valence n s2 shell of alkaline-earth-metal atoms: beryllium (n=2), magnesium (n=3), and calcium (n=4). We consider the range of photon energies below the onset of resonant and Auger ionization processes where the subvalent and core electrons can be treated as spectators. By comparing alkaline-earth-metal atoms with helium, we elucidate the role of the ground state and final ionized state correlations in DPI of various quasi-two-electron atoms.
AB - We apply the convergent close-coupling formalism to describe direct double photoionization (DPI) of the valence n s2 shell of alkaline-earth-metal atoms: beryllium (n=2), magnesium (n=3), and calcium (n=4). We consider the range of photon energies below the onset of resonant and Auger ionization processes where the subvalent and core electrons can be treated as spectators. By comparing alkaline-earth-metal atoms with helium, we elucidate the role of the ground state and final ionized state correlations in DPI of various quasi-two-electron atoms.
UR - http://www.scopus.com/inward/record.url?scp=34147174270&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.75.042703
DO - 10.1103/PhysRevA.75.042703
M3 - Article
SN - 1050-2947
VL - 75
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 042703
ER -