Solid-state bandpass detector for inverse photoemission spectroscopy

This paper presents the details of a new arrangement for the bandpass detection of radiation in the vacuum ultraviolet region. The detector is based on two wide bandpass filters that share the diminishing quantum efficiency of a microchannel plate as their common low-energy cutoff, but have high-energy cutoffs determined by the transmittance limits of different crystal windows. The detector has been used to perform an inverse photoemission experiment on a sample of polycrystalline gold. From the results of this experiment the detector is estimated to have a bandpass centered at 11.4 eV and a resolution of 0.57 eV. (FWHM).