High-resolution, low-energy positron scattering from helium: measurements of the total scattering cross section
We present high-resolution (80 meV FWHM) measurements of the positron-helium total cross section in the energy range between 1 and 15 eV. The absolute magnitude of the cross section is in excellent agreement with recent state-of-the-art theoretical calculations and with previous absolute measurements (e.g. Mizogawa et al). Specific scans in the 1-3 eV and 5-8 eV energy regions reveal no evidence of the structures in the cross section reported by Karwasz et al.
|Collections||ANU Research Publications|
|Source:||Journal of Physics B: Atomic, Molecular and Optical Physics|
|01_Sullivan_High-resolution,_low-energy_2008.pdf||200.66 kB||Adobe PDF||Request a copy|
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