Dynamical model of nuclear motion in the Auger emission spectrum of the core-excited [Formula Presented] molecule

Satoshi Tanaka, Yosuke Kayanuma, Kiyoshi Ueda

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

Nuclear motion of a plane polyatomic molecule [Formula Presented] is theoretically investigated under the core excitation of the B [Formula Presented] electron to the antibonding [Formula Presented] unoccupied molecular orbital. The B atom starts to move in the direction out of plane immediately after the core excitation. Owing to the finite core-hole lifetime comparable to a vibrational period, the B atom can move around the new equilibrium position of the core-excited state and the Auger decay occurs while this nuclear motion is going on. The x-ray absorption spectra and the resonant Auger emission spectra are calculated quantum mechanically. The calculated results are in reasonable agreement with the recent experimental results, illustrating that the dynamical aspect in the nuclear motion in the core-excited state is directly reflected in the resonant Auger emission spectrum.

Original languageEnglish
Pages (from-to)3437-3442
Number of pages6
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume57
Issue number5
DOIs
Publication statusPublished - 1998

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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