Storage ring experiments with cold molecular ions: The H3 + puzzle

Andreas Wolf*, Lutz Lammich, Daniel Strasser, Simon Altevogt, Vola Andrianarijaona, Henrik Buhr, Oded Heber, Holger Kreckel, Henrik B. Pedersen, Dirk Schwalm, Daniel Zajfman

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


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 2003 Phys. Rev. A 68 012703) and a recent storage-ring measurement at CRYRING (McCall B J et al 2003 Nature 422 500).

Original languageAmerican English
Pages (from-to)193-199
Number of pages7
JournalPhysica Scripta
StatePublished - 2004
Externally publishedYes
EventXXIII International Conference on Photonic, Electronic, and Atomic Collisions, 23rd ICPEAC - Stockholm, Sweden
Duration: 23 Jul 200329 Jul 2003


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