Positronium formation in methanol and ethanol

Paul Coleman, N. J. Culver, B. M. W. Dowler

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
184 Downloads (Pure)

Abstract

Cross sections for the formation of positronium (Ps) in collisions of positrons with methanol and ethanol molecules, QPs, have been measured for positrons of incident energies from 3 to 40 eV. The threshold energies for Ps formation were found to be 4.0 ± 0.2 eV and 3.5 ± 0.5 eV, respectively. QPs for the two molecules are very similar in size and energy dependence, suggesting that Ps formation is associated preferentially with the OH group, whereas (Qtot–QPs), where Qtot is the total scattering cross section, is related more to the physical size of the molecules.
Original languageEnglish
Article number012712
Number of pages3
JournalPhysical Review A: Atomic, Molecular, and Optical Physics
Volume87
Issue number1
DOIs
Publication statusPublished - 31 Jan 2013

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