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Negative ion resonances in the autoionizing region of zinc: excitation of the 4s4p3P0,1,2 states

S A Napier1, D Cvejanović1,2, J F Williams1,2 and L Pravica1,2

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Temporary negative ion resonances above the ionization threshold of zinc atoms have been observed in angular differential electron excitation functions and photon excitation functions of the lowest optically forbidden 3P state. These resonances involve the opening of the 3d-shell or double excitation from the outermost 4s-shell and provide a sensitive test for channel coupling and electron correlation effects.


PACS

34.80.Dp Atomic excitation and ionization

34.50.Fa Electronic excitation and ionization of atoms (including beam-foil excitation and ionization)

32.80.Zb Autoionization

Subjects

Atomic and molecular physics

Dates

Issue 7 (14 April 2007)

Received 22 December 2006, in final form 20 January 2007

Published 9 March 2007



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