P Bolognesi et al 2006 J. Phys. B: At. Mol. Opt. Phys. 39 1899 doi:10.1088/0953-4075/39/8/008
P Bolognesi1, A Kheifets2, S Otranto3,7, M Coreno1,4, V Feyer1,5, F D Colavecchia6, C R Garibotti6 and L Avaldi1,4
Show affiliationsThe triple differential cross section (TDCS) of the He2+(1s−2) and Ne2+(2s−2) states has been studied under unequal energy sharing conditions and perpendicular geometry, for a ratio of about 3 between the energies of the two ejected electrons. The dynamical quantities which govern the photodouble ionization (PDI) process, i.e. the squared moduli of the gerade and ungerade complex amplitudes and the cosine of their relative phase, have been extracted from the experimental data. The results from the two targets have been compared between themselves as well as with the theoretical predictions of the SC3 and convergent close coupling (CCC) calculations. This work represents a joint experimental and theoretical approach to the investigation of PDI of atomic systems with more than two electrons.
32.80.Fb Photoionization of atoms and ions
31.15.xr Self-consistent-field methods
34.50.-s Scattering of atoms and molecules
31.15.vj Electron correlation calculations for atoms and ions: excited states
Issue 8 (28 April 2006)
Received 1 December 2005, in final form 22 February 2006
Published 3 April 2006
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