Year: 2018
Type: conference-paper
Abstract: Photoelectron scattering in a p -GaN(Cs,O) photocathode was studied by photoelectron emission spectroscopy at low temperatures. It has been experimentally established that the transfer of photoelectrons from the bulk of a p -GaN(Cs,O) photocathode to vacuum is accompanied by the emission of a cascade of optical phonons in the bulk and at the GaN–vacuum interface. Based on how the high-energy features of the photoelectron energy distribution shift with the photon energy, we find m hh / m 0 = 2.3 ± 0.3.
Language: English
Subfield: Instrumentation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2797828643
