SATELLITE STRUCTURE OF THE NEON VALENCE SHELL BY ELECTRON-MOMENTUM SPECTROSCOPY

Momentum distributions and spectroscopic factors are obtained in a hig h-resolution electron-momentum spectroscopy study of neon at 1500 eV. The shapes and relative magnitudes of the momentum profiles are in goo d 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 t he 2p and 2s manifold cross sections as well as the shape of the 2s cr oss section. Results for the momentum profiles belonging to excited P- 2(o) and S-2(e) manifolds are also presented. Spectroscopic factors fo r transitions belonging to the P-2(o) and S-2(e) manifolds are assigne d up to a binding energy of 95 eV. The spectroscopic factor for the lo west 2s transition is 0.85 +/- 0.02, whereas that for the ground-state 2p transition is 0.92 +/- 0.02. Comparison of the present binding ene rgies and spectroscopic factors are made against the results of severa l 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.