Ubiquitous Nature of Multimode Vibrational Resonances in Positron-Molecule Annihilation

A.C.L. Jones, J.R. Danielson, M.R. Natisin, C.M. Surko, G.F. Gribakin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
176 Downloads (Pure)

Abstract

Positron annihilation on many molecules occurs via positron capture into vibrational Feshbach resonances, with annihilation rates often further enhanced by energy transfer to vibrational excitations weakly coupled to the positron continuum. Data presented here uncover another scenario in which the positron couples directly to a quasicontinuum of multimode vibrational states. A model that assumes excitation and escape from a statistically complete ensemble of multimode vibrations is presented that reproduces key features of the data.
Original languageEnglish
Article number093201
Number of pages5
JournalPhysical Review Letters
Volume108
Issue number9
Early online date27 Feb 2012
DOIs
Publication statusPublished - 02 Mar 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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