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Phys. Rev. A 65, 034705 (2002) [4 pages]

Spin-orbit selectivity observed for the HCl+(X̃2Π) state using resonant photoemission

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R. F. Fink*, F. Burmeister, R. Feifel, M. Bässler, O. Björneholm, L. Karlsson, C. Miron, and M.-N. Piancastelli
Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden

S. L. Sorensen
Department of Synchrotron Radiation Research, Institute of Physics, University of Lund, Box 118, S-221 00 Lund, Sweden

H. Wang, K. Wiesner, and S. Svensson†
Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden

Received 2 February 2001; published 13 February 2002

We report the experimental observation of a strongly selective population of the spin-orbit components in the HCl+ X̃2ΠΩ states after excitation into the dissociative 2p-16σ* core excited state. A progression of highly excited vibrational states with either the Ω=3/2 or Ω=1/2 component of the final state is populated, respectively, when the excitation is tuned in the 2p3/2-16σ* or 2p1/2-16σ* part of the resonance. This effect is explained theoretically to be due to the orientational selectivity of the excitation process and the preference of the L2,3VV Auger process to produce valence holes with the same orientation as the core holes.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.034705
DOI:
10.1103/PhysRevA.65.034705
PACS:
33.80.Eh, 33.70.Ca, 34.50.Gb

*Also at Theoretical Chemistry, University of Lund, Box 124, S-221 00 Lund, Sweden.

†Corresponding author. Fax: +46-18 471 35 24. Email address: svante.svensson@fysik.uu.se

 
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