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Positron-molecule annihilation by capture into vibrational Feshbach resonances of infrared-active modes

G. F. Gribakin·C. M. R. Lee
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Abstract

Enhanced positron annihilation on polyatomic molecules is a long-standing and complex problem. We report the results of calculations of resonant positron annihilation on methyl halides. A free parameter of our theory is the positron binding energy. A comparison with energy-resolved annihilation rates measured for CH$_3$F, CH$_3$Cl, CH$_3$Br [Barnes et al. Phys. Rev. A {\bf 74}, 012706 (2006)] shows good agreement and yields estimates of the binding energies.

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G. F. Gribakin, C. M. R. Lee. 2006-08-29. Positron-molecule annihilation by capture into vibrational Feshbach resonances of infrared-active modes. https://doi.org/10.1103/physrevlett.97.193201

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