Photonmediated electron multiplication in liquid xenon doped with trimethylamine
Abstract
Electron multiplication mediated by photons has been observed in liquid xenon doped with trimethylamine in concentrations of 0, 9.3, 43, 118 and 400 ppm. The effect was observed by irradiating a single wire counter with 1 MeV electrons and gamma rays from ^{207}Bi sources. The multiplication factor was observed to increase from a value of 23 at a concentration of 9.3 ppm to a value of 45 at a concentration of 118 ppm. Over the same range of concentrations, the threshold anode voltage for photonmediated electron multiplication (PMEM) decreased from 2.5 to 1.4 kV and the PMEM results in a deterioration of energy resolution. At a concentration of 400 ppm, the resulting electron multiplication was neither stable nor reproducible.
 Publication:

Nuclear Instruments and Methods in Physics Research A
 Pub Date:
 February 1989
 DOI:
 10.1016/01689002(89)907080
 Bibcode:
 1989NIMPA.275..346S