TY - JOUR
T1 - Shape variation of the two-electron photoionization spectrum with photon energy growth
AU - Liverts, E. Z.
AU - Amusia, M. Ya
AU - Drukarev, E. G.
AU - Krivec, R.
AU - Mandelzweig, V. B.
PY - 2005/1/1
Y1 - 2005/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=18544370365&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.71.012715
DO - 10.1103/PhysRevA.71.012715
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AN - SCOPUS:18544370365
SN - 1050-2947
VL - 71
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 012715
ER -