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  Metastable states of diatomic hydrogen anions

Kreckel, H., Herwig, P., Schwalm, D., Cizek, M., Golser, R., Heber, O., et al. (2014). Metastable states of diatomic hydrogen anions. Journal of Physics: Conference Series, 488(Section1): 012034. doi:10.1088/1742-6596/488/1/012034.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-16E6-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-16E8-9
Genre: Journal Article

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 Creators:
Kreckel, Holger1, Author              
Herwig, Philipp1, Author              
Schwalm, Dirk1, 2, Author              
Cizek, M.3, Author
Golser, Robin4, Author
Heber, Oded2, Author
Jordon-Thaden, Brandon1, Author              
Wolf, Andreas1, Author              
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              
2Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100, Israel, ou_persistent22              
3Charles University Prague, Faculty of Mathematics and Physics, Institute of Theoretical Physics, 180 00 Praha 8, Czech Republic, ou_persistent22              
4Universität Wien, Fakultät für Physik - Isotopenforschung, 1090 Wien, Austria, ou_persistent22              

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 MPINP: Quantendynamik - Abteilung Blaum
 Abstract: Transient states of the negative hydrogen molecule H−2 have drawn attention as intermediate reaction complexes in important molecular reactions like associative detachment (AD: H− + H → H−2→ H−2 + e−) and dissociative attachment (DA: e− + H2 → H−2 → H + H−). Recently it has been shown that metastable states of hydrogen molecular anions exist that defy both auto detachment and spontaneous dissociation for several microseconds (in the case of H−2) and even milliseconds (in the case of D−2). Here we present Coulomb explosion measurements for H−2 and D−2 that provide detailed information on the shape of the molecular wave function. We compare these experimental results with calculated wave functions obtained using a nonlocal resonance model. Our measurements confirm the predicted stabilization of H−2 and D−2 in states of high angular momentum.

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Language(s): eng - English
 Dates: 2014
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1088/1742-6596/488/1/012034
 Degree: -

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Title: Journal of Physics: Conference Series
Source Genre: Journal
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Publ. Info: Bristol : IOP Publ.
Pages: - Volume / Issue: 488 (Section1) Sequence Number: 012034 Start / End Page: - Identifier: ISSN: 1742-6588
CoNE: /journals/resource/111097776606042