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Phys. Rev. A 63, 052701 (2001) [5 pages]

Dissociative recombination and excitation of H3+

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M. J. Jensen, H. B. Pedersen*, C. P. Safvan†, K. Seiersen, X. Urbain‡, and L. H. Andersen
Institute of Physics and Astronomy, University of Aarhus, DK-8000 Århus C, Denmark

Received 28 November 2000; published 9 April 2001

Using the ASTRID heavy-ion storage ring, absolute cross sections for dissociative recombination and dissociative excitation of vibrationally cold H3+ have been measured as a function of energy in the region E=0-34 eV. A thermal rate coefficient for dissociative recombination of (1.0±0.2)×10-7 cm3s-1 at 300 K was obtained from cross sections at low energy. At high energy, capture into a group of doubly excited states of H3 gives rise to resonances in the dissociative recombination as well as in the dissociative excitation cross sections.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.63.052701
DOI:
10.1103/PhysRevA.63.052701
PACS:
34.80.Ht, 34.80.Lx

*Present address: Department of Particle Physics, Weizmann Institute of Science, Rehovot, 76100, Israel.

†Present address: Nuclear Science Center, P. O. Box 10502, Aruna Asaf Ali Marg, New Delhi 110067, India.

‡Permanent address: Départment de Physique, Université Catholique de Louvain, B1348, Louvain-la-Neuve, Belgium.

 
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