Low-energy positron scattering on Atoms and Molecules

G. Karwasz; D. Pliszka; A. Zecca

doi:10.1117/12.629523

1 June 2005 Low-energy positron scattering on atoms and molecules

G. Karwasz, D. Pliszka, A. Zecca

Author Affiliations +

Proceedings Volume 5849, Fifth Workshop on Atomic and Molecular Physics; (2005) https://doi.org/10.1117/12.629523
Event: Fifth Workshop on Atomic and Molecular Physics, 2004, Jurata, Poland

Abstract

We report total cross sections (TCS) measurements for positron scattering on N₂, Ar, He and three cyclic hydrocarbons. The data have been obtained with a new linear low-energy spectrometer at Trento University. Both nitrogen and argon total cross sections shows a flat part in TCS from few eV up to the positronium formation thresholds. For cyclocarbons he has found very high values of the TCS in low energy range. Modeling using effective range theory is performed for benzene and cyclohexane. In He results we found some resonant structures indicating formation of virtual positronium.

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G. Karwasz, D. Pliszka, and A. Zecca "Low-energy positron scattering on atoms and molecules", Proc. SPIE 5849, Fifth Workshop on Atomic and Molecular Physics, (1 June 2005); https://doi.org/10.1117/12.629523

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