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Phys. Rev. A 71, 020701(R) (2005) [4 pages]

Configuration-interaction-induced dynamic spin polarization of the Ar*(2p1∕2,3∕2−14s1∕2)J=1 resonant Auger decay

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B. Lohmann1,2,*, B. Langer3, G. Snell4,†, U. Kleiman2,‡, S. Canton4,†, M. Martins5, U. Becker2, and N. Berrah4
1Institut für Theoretische Physik, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 9, D-48149 Münster, Germany
2Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin/Dahlem, Germany
3Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Strasse 2A, D-12489 Berlin, Germany
4Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008, USA
5Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany

See Also: Publisher's Note

Received 7 April 2004; published 9 February 2005; corrected 17 February 2005

Spin-resolved measurements of the Ar*(2p1∕2,3∕2−14s1∕2)J=1 resonantly excited L2,3M2,3M2,3 Auger decay have been performed. The low resolution Auger spectrum, which due to cancellation between different multiplet components should exhibit virtually zero dynamic spin polarization, reveals an unexpected nonvanishing polarization effect. Calculations within a relativistic distorted wave approximation explain this effect as configuration-interaction (CI) induced. The CI generates experimentally unresolved fine structure components with low and high total angular momentum, giving rise to asymmetric cases where the high J part of certain multiplets is suppressed by internal selection rules for diagram lines. In this case, only the low J components survive with no partner for spin-polarization cancellation.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.020701
DOI:
10.1103/PhysRevA.71.020701
PACS:
32.80.Hd, 32.80.Rm, 31.25.Jf, 31.15.Ar

*Author to whom correspondence should be addressed. Electronic address: lohmanb@uni-muenster.de

†Present address: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

‡Present address: Auburn University, Department of Physics, Auburn, AL 36849, USA.

See Also

Publisher's Note: B. Lohmann, B. Langer, G. Snell, U. Kleiman, S. Canton, M. Martins, U. Becker, and N. Berrah, Publisher's Note: Configuration-interaction-induced dynamic spin polarization of the Ar*(2p1∕2,3∕2−14s1∕2)J=1 resonant Auger decay[Phys. Rev. A 71, 020701 (2005)], Phys. Rev. A 71, 039907 (2005).

 
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