Quasiclassical double photoionization from the 2^{1,3}S excited states of helium including shakeoff

Details Quasiclassical double photoionization from the 2^{1,3}S excited states of helium including shakeoff Quasiclassical double photoionization from the 2^{1,3}S excited states of helium including shakeoff

2003-03-13

arxiv.org/abs/physics/0303054v1

Journal of Physics B, 36, 2717 (2003)

Physics

Atomic Physics

9 pages, 5 figures

Scientific paper

10.1088/0953-4075/36/13/303

We account for the different symmetries of the 2^{1,3}S helium excited states in a quasiclassical description of the knockout mechanism augmented by a quantum shakeoff contribution. We are thus able to formulate the separate contribution of the knockout and shakeoff mechanisms for double photoionization for any excess energy from the 2^{1,3}S states. Photoionization ratios and singly differential cross sections calculated for the 2^{1,3}S excited states of helium are found to be in very good agreement with recent theoretical results.

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