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  Absolute high-resolution rate coefficients for dissociative recombination of electrons with HD+: Comparison of results from three heavy-ion storage rings

Al-Khalili, A., Rosén, S., Danared, H., Derkatch, A. M., Källberg, A., Larsson, M., et al. (2003). Absolute high-resolution rate coefficients for dissociative recombination of electrons with HD+: Comparison of results from three heavy-ion storage rings. Physical Review A, 68: 042702.

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Al-Khalili, A.1, Author
Rosén, S.1, Author
Danared, H.1, Author
Derkatch, A. M.1, Author
Källberg, A.1, Author
Larsson, M.1, Author
Le Padellec, A.1, Author
Neau, A.1, Author
Semaniak, J.1, Author
Thomas, R.1, Author
af Ugglas, M.1, Author
Vikor, L.1, Author
Zong, W.1, Author
van der Zande, W. J.1, Author
Urbain, X.1, Author
Jensen, M. J.1, Author
Bilodeau, R. C.1, Author
Heber, O.1, Author
Pedersen, H. B.2, Author           
Safvan, C. P.1, Author
Andersen, L. H.1, AuthorLange, M.3, Author           Levin, J.2, Author           Gwinner, G.2, Author           Knoll, L.2, Author           Scheffel, M.2, Author           Schwalm, D.2, Author           Wester, R.2, Author           Zajfman, D.2, Author           Wolf, A.3, Author            more..
Affiliations:
1Department of Physics, Stockholm University, SCFAB, S-106 91 Stockholm, Sweden Institute of Physics, Swietokzryska Academy, 25 406 Kielce, Poland Manne Siegbahn Laboratory, Stockholm University, S-104 05 Stockholm, Sweden LCAR UMR 5589, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, Batîment III R1B4, 31062 Toulouse Cedex 4, France FOM-Institute AMOLF, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands Department of Physics and Astronomy, University of Aarhus, DK-8000 Århus C, Denmark 7Department of Particle Physics, Weizmann Institute of Science, 76100 Rehovot, Israel, ou_persistent22              
2Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907546              
3Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              

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 Abstract: Experimental data are presented from three different heavy-ion storage rings (ASTRID in Aarhus, CRYRING in Stockholm, and TSR in Heidelberg) to assess the reliability of this experimental tool for the extraction of absolute rate coefficients and cross sections for dissociative recombination (DR). The DR reaction between HD+ and electrons has been studied between 0 and 30 eV on a dense energy grid. HD+ displays two characteristic local maxima in the DR rate around 9 and 16 eV. These maxima influence the data analysis at smaller collision energies. We conclude that resonant structures in the DR cross sections are reproduced among the experiments within the collision energy resolution. The absolute cross sections agree within the systematic experimental errors of 20% related to the measurement of the ion currents. Absolute thermal rate coefficients for HD+ ions are given for an electron temperature range of 50-300 K. Results for the DR cross section and the thermal rate coefficients are compared to recent theoretical calculations including rotational effects, finding satisfactory agreement.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Issued
 Pages: -
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 Rev. Type: Peer
 Identifiers: eDoc: 51121
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Title: Physical Review A
  Alternative Title : Phys. Rev. A
Source Genre: Journal
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Pages: - Volume / Issue: 68 Sequence Number: 042702 Start / End Page: - Identifier: -