MiniCLEAN is a single-phase liquid argon dark matter experiment. During the initial cooling phase, impurities within the cold gas (< 140 K) were monitored by measuring the scintillation light triplet lifetime, and ultimately a triplet lifetime of 3. 480 ± 0. 001 (stat.) ± 0. 064 (sys.) μs was obtained, indicating ultra-pure argon. This is the longest argon triplet time constant ever reported. The effect of quenching of separate components of the scintillation light is also investigated.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics