Optimal operating conditions and characteristics of acetone/CaF_2 detector for inverse photoemission spectroscopy

TL;DR

This study investigates an acetone/CaF_2 photon detector for inverse photoemission spectroscopy, optimizing its operating conditions and demonstrating superior performance with high count rates and narrow band-pass compared to previous detectors.

Contribution

The paper introduces an optimized acetone/CaF_2 detector with improved count rate and bandwidth, operating effectively in the proportional region with minimal dead time.

Findings

Count rate is three times higher than previous reports.

Optimal conditions are 4 mbar acetone and 745 V voltage.

Detector achieves a band-pass of 0.48 eV FWHM.

Abstract

Performance and characteristics of a band-pass photon detector using acetone gas and CaF_2 window (acetone/CaF_2) have been studied and compared with an ethanol/MgF_2 detector. The optimal operating conditions are found to be 4 mbar acetone pressure and 745+/-20 V anode voltage. The count rate obtained by us is about a factor of 3 higher than what has been reported earlier for the acetone detector. Unlike other gas filled detectors, this detector works in the proportional region with very small dead time (4 micro sec). A detector band-pass of 0.48+/-0.01 eV FWHM is obtained.