Observation of a microwave spectrum of the long-range He … H2+ complex

Carrington, Alan; Gammie, David I.; Shaw, Andrew M.; Taylor, Susie M.; Hutson, Jeremy M.

doi:10.1016/0009-2614(96)00860-3

Cited by 35 publications

(40 citation statements)

References 17 publications

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“…1 The near-dissociation levels on the two potentials are compared in Fig. 5; they are reasonably similar, but it may be seen that the new potential gives some parity splittings that are inverted compared to those on the F/S potential.…”

Section: A Results On the Two-dimensional Potentialsmentioning

confidence: 99%

“…Our fitted potential is the best available for calculating the near-dissociation states of He-H 2 ϩ involved in the spectra of Carrington et al 1 Earlier potentials either neglected the H-H stretching coordinate or used fitting functions without the correct long-range behavior. The new potential has more bound states near dissociation than the two-dimensional potential of Falcetta and Siska, which was used in earlier attempts to assign the near-dissociation spectra.…”

Section: Discussionmentioning

confidence: 99%

“…1 There are several sources of angular momentum in the complex, and an account of the angular momentum coupling scheme needed to describe the states has been given previously.…”

Section: Bound-state Calculationsmentioning

confidence: 99%

“…1 However, the experiment is an unusual one, and the lines are difficult to assign. In the Southampton experiment, a mass-selected ion beam containing highly excited He-H 2 ϩ molecules is subjected to microwave radiation, and then passed through an electric field.…”

Section: Introductionmentioning

confidence: 99%

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The potential energy surface and near-dissociation states of He-H2+

Meuwly

Hutson

1999

The Journal of Chemical Physics

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. The potential energy surface for the ground state of He-H 2 ϩ is calculated using ab initio QCISD͑T͒ calculations and a correlation-consistent basis set. The geometries chosen include all combinations of 21 intermolecular distances R, three H-H distances r, and seven Jacobi angles . The final potential is fitted to a functional form that incorporates the correct long-range behavior. Close-coupling calculations of both low-lying and near-dissociation vibration-rotation states are carried out. The results are expected to be of assistance in assigning the microwave spectra of He-H 2 ϩ in near-dissociation states ͓Carrington et al., Chem. Phys. Lett. 260, 395 ͑1996͔͒.

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Section: A Results On the Two-dimensional Potentialsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…1 There are several sources of angular momentum in the complex, and an account of the angular momentum coupling scheme needed to describe the states has been given previously.…”

Section: Bound-state Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The potential energy surface and near-dissociation states of He-H2+

Meuwly

Hutson

1999

The Journal of Chemical Physics

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“…In (35), where we could study levels bound by as little as a few MHz. Microwave/microwave double resonance experiments, together with observations of Zeeman splittings, were crucial in the analysis and assignment of the spectra.…”

Section: Oxfordmentioning

confidence: 99%

A FREE RADICAL

Carrington

2001

Annu. Rev. Phys. Chem.

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This chapter describes my research career, spanning the period from 1955 to 2000. My initial PhD work at the University of Southampton was concerned with the electronic structure and spectra of transition metal complexes and included studies of the electronic spin resonance (ESR) spectra of magnetically dilute single crystals. After a year at the University of Minnesota, I went to Cambridge University and for the next six years studied the ESR spectra of liquid phase organic free radicals.

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