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Variation in resonant Auger yields into the 1G4sdotnl states of Kr across the L3 threshold

K Okada1, M Kosugi1, A Fujii2, S Nagaoka2, T Ibuki3, S Samori3, Y Tamenori4, H Ohashi4, I H Suzuki5 and K Ohno1

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Resonant Auger transitions into 1G4sdotnl states following Kr 2p3/2 electron excitation have been measured using monochromatized undulator radiation and a hemispherical electron energy analyser. A clear identification of electron peaks was made for 1G4sdot5s, 1G4sdot4d, 1G4sdot5d and so forth when the photon energy approached the ionization threshold. The formation of the 1G4sdot4d state was found over a relatively wide energy range across the threshold, because of the short lifetime of the 2p hole and of shake effects in electron emission processes. The angular dependence of these decays showed little effect on the polarization direction of the incident photon, which suggests that little anisotropy is related to that of the normal Auger transition into the 1G4 state.


PACS

32.80.Hd Auger effect (including Coster-Krönig transitions)

32.70.Cs Oscillator strengths, lifetimes, transition moments

Subjects

Atomic and molecular physics

Dates

Issue 4 (28 February 2005)

Received 23 October 2004

Published 7 February 2005



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