Ne valence correlation satellites in the photon energy region 80-220 eV

Photoelectron spectroscopy using monochromatized synchrotron radiation has been made to study the 2s²2p⁴nl correlation satellites of the Ne atom in the range of photoelectron kinetic energy E_K from 30 eV to 160 eV (hv=8 approximately 220 eV). For five main satellites including 2p⁴(³P)np²P(n=3, 4) and 2p⁴(¹D)3s²D states, the (satellite)/(2p-mainline) intensity ratio has been determined as a function of E_K. From a combination of these relative intensities with the reported 2p cross section, partial cross sections for the satellite excitation have also been obtained. The intensity ratios for the satellites are not constant over the photon energy region studied, indicating that the dynamic electron correlation cannot be neglected.