Xenon-doped liquid argon has been proposed as a good alternative to pure liquid argon in scintillation detectors. In this study, we report on the measurement of the time profile of scintillation light emitted from xenon-doped liquid argon with molar concentrations up to 160 ppm. A compact setup has been developed for this study, with silicon photomultiplier (SiPM) as the photosensor and 210Po and 90Sr as scintillation sources. An effective model based on the de-excitation processes has been developed to describe the data. The results show that xenon-doped liquid argon is a good fast scintillator and can be used in lieu of tetraphenyl butadiene (TPB) in a way that preserves its capability for particle identification via pulse shape discrimination (PSD).
All Science Journal Classification (ASJC) codes
- Mathematical Physics
- Ionization and excitation processes
- Noble liquid detectors (scintillation, ionization, double-phase)
- Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc)
- Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)