Bond-distance-dependent decay probability of the N 1s→π* core-excited state in N2

M. N. Piancastelli, R. F. Fink, R. Feifel, M. Bässler, S. L. Sorensen, C. Miron, H. Wang, I. Hjelte, O. Björneholm, A. Ausmees, S. Svensson, P. Sałek, F. Kh Gel'mukhanov, H. Ågren

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We report the observation of the unusually weak decay of the N 1s→π* core-excited N2 molecule to the B 2Σu+ final state of N2+, which is only detectable in an experiment with high sensitivity. The resonant Auger spectra exhibit an unexpected dependence on the selected vibrational level of the intermediate state. Theoretical calculations show that the interference between direct and resonant photoemission as well as a strong geometry dependence of the decay probability on the bond distance give rise to the observed features.

Original languageEnglish
Pages (from-to)1819-1826
Number of pages8
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number9
Publication statusPublished - 2000 May 14


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