Structure and Stability of the Negative Hydrogen Molecular Ion

Jordon-Thaden, Brandon; Kreckel, Holger; Golser, R.; Schwalm, Dirk; Berg, Max; Buhr, Hendrik; Gnaser, H.; Grieser, Manfred; Heber, Oded; Lange, Michael; Novotny, Oldrich; Novotny, Steffen; Pedersen, H. B.; Petrignani, Annemieke; Repnow, Roland; Rubinstein, H.; Shafir, D.; Wolf, Andreas; Zajfman, D.

doi:10.1103/PhysRevLett.107.193003

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Structure and Stability of the Negative Hydrogen Molecular Ion

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Jordon-Thaden, Brandon
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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

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Schwalm, Dirk
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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

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Buhr, Hendrik
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Department of Particle Physics, Weizmann Institute of Science;

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Grieser, Manfred
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Lange, Michael
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Novotny, Oldrich
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Columbia Astrophysics Laboratory;

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Novotny, Steffen
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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

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Petrignani, Annemieke
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Repnow, Roland
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Wolf, Andreas
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://prl.aps.org/abstract/PRL/v107/i19/e193003
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Citation

Jordon-Thaden, B., Kreckel, H., Golser, R., Schwalm, D., Berg, M., Buhr, H., et al. (2011). Structure and Stability of the Negative Hydrogen Molecular Ion. Physical Review Letters, 107(19): 193003, pp. 1-4. doi:10.1103/PhysRevLett.107.193003.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-305A-4

Abstract

We present the results of a Coulomb explosion experiment that allows for the imaging of the rovibrational wave function of the metastable H₂^- ion. Our measurements confirm the predicted large internuclear separation of 6 a.u., and they show that the ion decays by autodetachment rather than by spontaneous dissociation. Imaging of the resulting H₂ products reveals a large angular momentum of J=25±2, quantifying the rotation that leads to the metastability of this most fundamental molecular anion.