Energy sharing and angular distribution in the double photoionization of helium
- Institute of Physics, The University of St. Petersburg, 198904 St. Petersburg (Russian Federation)
The double photoionization of an atom is considered in the near-threshold domain. The angular correlation pattern is analyzed for an arbitrary sharing of the excess energy by the electrons. The motion over the hyperspherical radius {ital R} is treated semiclassically which casts the problem in a nonstationary form. For motion over the hyperspherical angle {alpha} the set of classical trajectories is considered. They converge to the same ({ital R}{r_arrow}{infinity}) limit which corresponds to a chosen energy-sharing ratio. For each {alpha}({ital R}) trajectory the quantum wave packet (over the correlation angle {theta}{sub 12}) is propagated from the inner zone to the region of free-electron motion. At the border of the reaction zone a realistic boundary condition is imposed. The cross sections exhibit a weak dependence on the energy-sharing ratio.
- OSTI ID:
- 44644
- Journal Information:
- Physical Review A, Vol. 51, Issue 5; Other Information: PBD: May 1995
- Country of Publication:
- United States
- Language:
- English
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