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Time and Energy Responses of Liquid-Xenon Scintillation Chamber for 20Ne Ion Beam at 135A MeV

The time and energy responses of a liquid-xenon (LXe) scintillation chamber to heavy-ion beams were studied using 20Ne ions at an energy of 135A MeV. The scintillation light in LXe was observed by two photomultipliers (PMTs). The intrinsic time resolution by one PMT was confirmed to be approximately 30 ps in sigma up to a beam intensity of 1.3 ×105 counts per second (cps). The energy output was observed to be also constant for the increase in the beam intensity. The energy resolution was 1.2–1.4% in sigma. The possibilities of LXe as a detector medium for an energy spectrometer and a timing detector for heavy-ion beams were described.