Resonant scattering of positronium as a quasifree electron

M. Shipman, S. J. Brawley, L. Sarkadi, G. Laricchia

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to clarify the physics underlying the observations of the electronlike behavior of positronium (Ps) and its resonant scattering from CO2, we have measured the Ps+N2 total cross section and found it also to exhibit significant structure. Analysis of the resonances reveals that Ps is distorted in the collisions and classical trajectory Monte Carlo calculations indicate that the electron is on average closer to the target than the positron, which may in turn bind resonantly to the ensuing temporary negative ion. This description of the nature of Ps resonances agrees with long-standing theoretical predictions.

Original languageEnglish
Article number032704
JournalPhysical Review A
Volume95
Issue number3
DOIs
Publication statusPublished - Mar 21 2017

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positronium
scattering
electrons
negative ions
positrons
trajectories
physics
collisions
cross sections
predictions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Resonant scattering of positronium as a quasifree electron. / Shipman, M.; Brawley, S. J.; Sarkadi, L.; Laricchia, G.

In: Physical Review A, Vol. 95, No. 3, 032704, 21.03.2017.

Research output: Contribution to journalArticle

Shipman, M. ; Brawley, S. J. ; Sarkadi, L. ; Laricchia, G. / Resonant scattering of positronium as a quasifree electron. In: Physical Review A. 2017 ; Vol. 95, No. 3.
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