Abstract
A model-potential approach has been developed to study positron interactions with molecules. Binding energies and annihilation rates are calculated for positron bound states with a range of alkane molecules, including rings and isomers. The calculated binding energies are in good agreement with experimental data, and the existence of a second bound state for -alkanes () with is predicted in accord with experiment. The annihilation rate for the ground positron bound state scales linearly with the square root of the binding energy.
- Received 28 May 2019
- Revised 20 June 2019
DOI:https://doi.org/10.1103/PhysRevLett.123.113402
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