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Phys. Rev. A 69, 022713 (2004) [11 pages]

Resonant ion-pair formation in electron collisions with rovibrationally cold H3+

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S. Kalhori, R. Thomas, A. Al-Khalili, A. Ehlerding, F. Hellberg, A. Neau, and M. Larsson*
Department of Physics, Stockholm University, AlbaNova University Centre, S-106 91 Stockholm, Sweden

Å. Larson
Department of Physics, The Royal Institute of Technology, AlbaNova University Centre, S-106 91 Stockholm, Sweden

A. J. Huneycutt and B. J. McCall
Department of Chemistry, University of California at Berkeley, Berkeley, California 94720, USA

N. Djurić and G. H. Dunn
JILA, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309, USA

J. Semaniak and O. Novotny
Institute of Physics, Świȩtokrzyska Academy, 25 406 Kielce, Poland

A. Paál and F. Österdahl
Manne Siegbahn Laboratory, Stockholm University, S-104 05 Stockholm, Sweden

A. E. Orel
Department of Applied Science, University of California, Davis, Davis, California 95616, USA

Received 8 September 2003; published 26 February 2004

Experimental and theoretical cross sections for the resonant ion-pair formation (RIP) in electron collisions with rovibrationally cold H3+ ions are presented. Absolute cross sections for the RIP process producing H- ions are measured for center-of-mass energies between 2–20 eV using the CRYRING, heavy-ion storage ring. Theoretical cross sections are obtained using wave-packet propagation on both one- and two-dimensional models of relevant diabatic-potential energy surfaces and couplings of H3+ and H3.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.022713
DOI:
10.1103/PhysRevA.69.022713
PACS:
34.80.Ht, 33.15.Bh, 33.15.Dj, 82.20.Fd

*Corresponding author. Email address: ml@physto.se

Present address: JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA.

Present address: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, 91109 CA, USA.