Elastic scattering of electrons from^20,22Ne

Abstract

Elastic electron scattering cross sections have been measured for 20,22Ne in the momentum transfer range 0.21-1.30 fm-1. For a two-parameter Fermi distribution the root-mean-square radius of 22Ne is found to be 0.982+or-0.003 times that of 20Ne. The half-density radius is increased by 3.6+or-0.4% in going from 20Ne to 22Ne but the surface thickness is reduced by 7.4+or-1.1%. Comparison is made with large-basis shell-model calculations which describe the relative cross sections quite well.