Journal
PHYSICAL REVIEW A
Volume 78, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.78.032706
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Funding
- Australian Research Council
- University of Western Australia
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Electron impact excitation of the 4p P-3,1(1), 4d, 5d, 6d D-3(1,2,3), and 4d, 5d D-1(1) states of the neutral zinc atom was studied by measuring photon decay intensities in the energy region of the 3d(9)4s(2)4p autoioionizing states. Two phenomena, both involving strong electron correlations and an active role of one of the 3d electrons in an intermediate scattering step, have been observed. The first is 3d core-excited negative-ion resonances, which dominate the energy region between 10.5 and 11.5 eV. The second is postcollision interaction (PCI) in the decay of autoionizing states which populates higher excited states at incident electron energies above 11.5 eV. The low energies of both the scattered and ejected electrons after near-threshold excitation of 3d(9)4s(2)4p autoionizing states enable a large transfer of orbital angular momentum, up to two units, by the PCI.
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