Frozen-Core Model of the Double Photoionization of Beryllium
The integrated and fully differential cross sections of the DPI (double photoionization) of beryllium (Be) in the frozen-core approximation were presented. The photon-energy dependence of the total ionization excitation and the double ionization cross sections in Be resembled that of helium (He). Various singly and doubly ionized channels were represented by a near-complete set of negative and positive energy pseudostates.
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|Source:||Physical Review A: Atomic, Molecular and Optical Physics|