Interference effects during the Auger decay of the CO 1s1π resonance studied by angular distribution of the CO+(A) photoelectrons and polarization analysis of the CO+(AX) fluorescence

Ph. V. Demekhin, I. D. Petrov, V. L. Sukhorukov, W. Kielich, P. Reiss, R. Hentges, I. Haar, H. Schmoranzer, and A. Ehresmann
Phys. Rev. A 80, 063425 – Published 23 December 2009; Erratum Phys. Rev. A 81, 069902 (2010)

Abstract

Angular distributions of the CO+(AΠ2) photoelectrons and of the CO+(AΠ2XΣ2+) fluorescence are computed in the vicinity of the 1s1π resonant excitation of the CO molecule. In the calculations, lifetime vibrational interference and the direct transition amplitude for population of the AΠ2(v) states were taken into account ab initio. The weak direct photoionization channel induces broad exciting-photon energy range dispersions of the angular distribution parameters βAe(ω) and β2AX(ω), and the nuclear vibrational motion causes variations of the computed parameters across the positions of the CO(vr) vibronic states. Present calculations are in good agreement with available vibrationally and angularly resolved resonant Auger spectra. Theoretical β2AX(ω) parameters are in agreement with the experimental results from the polarization analysis of the CO+(AX) fluorescence induced by linearly polarized synchrotron radiation.

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  • Received 25 September 2009

DOI:https://doi.org/10.1103/PhysRevA.80.063425

©2009 American Physical Society

Erratum

Authors & Affiliations

Ph. V. Demekhin1,*, I. D. Petrov2, V. L. Sukhorukov2, W. Kielich1, P. Reiss1, R. Hentges1, I. Haar1, H. Schmoranzer3, and A. Ehresmann1

  • 1Institute of Physics and CINSaT, University of Kassel, D-34132 Kassel, Germany
  • 2Rostov State University of Transport Communications, 344038 Rostov-on-Don, Russia
  • 3Department of Physics, Kaiserslautern University of Technology, D-67653 Kaiserslautern, Germany

  • *demekhin@physik.uni-kassel.de

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Vol. 80, Iss. 6 — December 2009

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