Positron scattering from vinyl acetate
Abstract
Using a BeerLambert attenuation approach, we report measured total cross sections (TCSs) for positron scattering from vinyl acetate (C_{4}H_{6}O_{2}) in the incident positron energy range 0.1550 eV. In addition, we also report an independent atom model with screening corrected additivity rule computation results for the TCSs, differential and integral elastic cross sections, the positronium formation cross section and inelastic integral cross sections. The energy range of these calculations is 11000 eV. While there is a reasonable qualitative correspondence between measurement and calculation for the TCSs, in terms of the energy dependence of those cross sections, the theory was found to be a factor of ∼2 larger in magnitude at the lower energies, even after the measured data were corrected for the forward angle scattering effect.
 Publication:

Journal of Physics B Atomic Molecular Physics
 Pub Date:
 September 2014
 DOI:
 10.1088/09534075/47/17/175202
 Bibcode:
 2014JPhB...47q5202C