M W J Bromley et al 1998 J. Phys. B: At. Mol. Opt. Phys. 31 4449 doi:10.1088/0953-4075/31/19/027
The elastic scattering of positrons from beryllium and magnesium in the low-energy region
M W J Bromley, J Mitroy and G Ryzhikh
Show affiliationsThe elastic scattering of positrons from beryllium and magnesium is studied by using a simple model potential to represent the interaction between the positron and target atoms. The model is tuned by adjusting the free parameters to reproduce previous predictions of the positron binding energies of the 
and 
ground states. An indication of the theoretical uncertainty in the derived phase shifts and cross sections is given by running a series of calculations with slightly different model potentials. The estimated scattering lengths are 
and 
for Be and Mg, respectively. The total cross section for positron-magnesium scattering constructed by adding the inelastic cross section computed with many-body perturbation theory to the present elastic cross section is broadly consistent with the experimental data.
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Issue 19 (14 October 1998)
Received 8 June 1998
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The elastic scattering of positrons from beryllium and magnesium in the low-energy region
M W J Bromley et al 1998 J. Phys. B: At. Mol. Opt. Phys. 31 4449
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