Satellite structure of the neon valence shell by electron-momentum spectroscopy

Abstract

Momentum distributions and spectroscopic factors are obtained in a high-resolution electron-momentum spectroscopy study of neon at 1500 eV. The shapes and relative magnitudes of the momentum profiles are in good agreement with the results of calculations made within the distorted-wave Born approximation (DWBA) and target Hartree-Fock approximation frameworks. The DWBA accurately describes the relative magnitudes of the 2p and 2s manifold cross sections as well as the shape of the 2s cross section. Results for the momentum profiles belonging to excited 2Po and 2Se manifolds are also presented. Spectroscopic factors for transitions belonging to the 2Po and 2Se manifolds are assigned up to a binding energy of 95 eV. The spectroscopic factor for the lowest 2s transition is 0.850.02, whereas that for the ground-state 2p transition is 0.920.02. Comparison of the present binding energies and spectroscopic factors are made against the results of several many-body calculations and photoelectron-spectroscopy (PES) results. The ramifications of the present work to earlier PES classifications of the correlation satellites are also considered. Show more