Lifetime Broadening and CI-Resonances Observed in ESCA
- 1 October 1976
- journal article
- Published by IOP Publishing in Physica Scripta
- Vol. 14 (4), 141-147
- https://doi.org/10.1088/0031-8949/14/4/004
Abstract
The electron spectrum of the M 2 and M 3 levels in bromine and krypton have been studied by high resolution ESCA. The M 1 M 2,3 M 2,3 super Coster-Kronig transitions become energetically forbidden for Zless than sim-36 (Kr) and recent calculations therefore predict a decrease in the M 2 and M 3 natural linewidths around krypton in the periodic system. The experiment shows that the 3p 3/2 linewidth is smaller in Kr than in Br. It is, however, also found that this decrease in linewidth is followed by configuration interaction (CI) between 3p 2 P and 3d 2 nl*2 P states. Several descrete CI resonances are observed in the Kr 3p spectrum. Such resonances are also studied in the N shell for the elements from Te (Z = 52) to Ba (Z = 56). For these elements the effect is found to be much larger due to the strong collective character of 4d-nf* excitations.Keywords
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