Localization of Inner-Shell Photoelectron Emission and Interatomic Coulombic Decay in Ne$_2$

Details Localization of Inner-Shell Photoelectron Emission and Interatomic Coulombic Decay in Ne$_2$ Localization of Inner-Shell Photoelectron Emission and Interatomic Coulombic Decay in Ne$_2$

2008-03-31

arxiv.org/abs/0803.4461v1

Physics

Atomic and Molecular Clusters

4 pages, 4 figures

Scientific paper

10.1088/0953-4075/41/10/101002

We used Cold Target Recoil Ion Momentum Spectroscopy (COLTRIMS) to investigate the decay of Ne$_2$ after K-shell photoionization. The breakup into Ne$^{1+}$ / Ne$^{2+}$ shows interatomic Coulombic decay (ICD) occurring after a preceding atomic Auger decay. The molecular frame angular distributions of the photoelectron and the ICD electron show distinct, asymmetric features, which imply localization of the K-vacancy created at one of the two atomic sites of the Ne$_2$ and an emission of the ICD electron from a localized site. The experimental results are supported by calculations in frozen core Hartree-Fock approach.

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