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Storage Ring Experiments with Cold Molecular Ions: the H3+ Puzzle

MPS-Authors
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Wolf,  A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Lammich,  L.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Strasser,  D.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Altevogt,  S.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Andrianarijaona,  V.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Buhr,  H.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Kreckel,  H.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Pedersen,  H.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Schwalm,  D.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Zajfman,  D.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Citation

Wolf, A., Lammich, L., Strasser, D., Altevogt, S., Andrianarijaona, V., Buhr, H., et al. (2004). Storage Ring Experiments with Cold Molecular Ions: the H3+ Puzzle. Physica Scripta, T110, 193-199.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-8CF9-E
Abstract
Experiments on the dissociative recombination (DR) of low-energy electrons with triatomic hydrogen ions (H3+) using merged beams in storage rings are discussed, focusing on the ro-vibrational relaxation and state diagnostics of the stored ion beam, on studies of the three-body breakup following DR, and on new observations showing a variation of the DR rates during the continuous interaction of the stored ions with a cold electron beam. Linear fragmentation patterns in the three-body DR are discussed in the light of the H3 electronic potential surfaces. Measured energy dependencies of the H3+ DR rate coefficient are compared to recent theoretical predictions [Kokoouline, V. and Greene, C. H., Phys. Rev. A 68, 012703 (2003)] and a recent storage-ring measurement at CRYRING [McCall, B. J. et al., Nature 422, 500 (2003)].