LIQUID XENON PROPORTIONAL SCINTILLATION-COUNTER

The characteristics of a liquid xenon proportional scintillation counter have been studied by using conversion electrons from 207Bi. Pulse shapes of the induced charge and the scintillation in the ionization chamber mode were observed and the variations of relative photon yield of the proportional scintillation against the applied voltage were measured. The energy spectra of the proportional scintillation for 207Bi were compared with those of the charge. The best resolution of the proportional scintillation was about 18% fwhm for 1 MeV electrons, which was almost the same as that of the charge. The linear relation between the normalized photon yield at constant electric field strength on wire surface and wire radius as expected from analogy with gas was not obtained but the tendency of increase in the normalized photon yield for wire radius was confirmed. © 1979.