Secondary electron emission model for photo-emission from metals in the vacuum ultraviolet

This study investigates two secondary electron emission (SEE) models for photoelectric energy distribution curves f(E-ph, h gamma), B, E-mean, absolute quantum efficiency (AQE), and the mean escape depth of photo-emitted electrons lambda of metals. The proposed models are developed from the density of states and the theories of photo-emission in the vacuum ultraviolet and SEE, where B is the mean probability that an internal photo-emitted electron escapes into vacuum upon reaching the emission surface of the metal, and E-mean is the mean energy of photo-emitted electrons measured from vacuum. The formulas for f(E-ph, h gamma), B, lambda, E-mean, and AQE that were obtained were shown to be correct for the cases of Au at h gamma = 8.1-11.6 eV, Ni at h gamma = 9.2-11.6 eV, and Cu at h gamma = 7.7-11.6 eV. The photoelectric cross sections (PCS) calculated here are analyzed, and it was confirmed that the calculated PCS of the electrons in the conduction band of Au at h gamma = 8.1-11.6 eV, Ni at h gamma = 9.2-11.6 eV, and Cu at h gamma = 7.7-11.6 eV are correct.

Automated summary

This study investigates two secondary electron emission models for photoelectric energy distribution curves and related parameters of metals, and confirms the correctness of these models through experimental data verification.