Triplet Lifetime in Gaseous Argon

Abstract

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 $\pm$ 0.001 (stat.) $\pm$ 0.064 (sys.) $\mu$s 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.

References in corpus (5)

• First results from the DEAP-3600 dark matter search with argon at SNOLAB
• Evidence of delayed light emission of TetraPhenyl Butadiene excited by liquid Argon scintillation light
• Luminescence quenching of the triplet excimer state by air traces in gaseous argon
• Argon Purification Studies and a Novel Liquid Argon Re-circulation System
• Improving Photoelectron Counting and Particle Identification in Scintillation Detectors with Bayesian Techniques

Cited by in corpus (5)

• The SNO+ Experiment
• Spectroscopic analysis of the argon scintillation with a wavelength sensitive particle detector
• Ambient Dose and Dose Rate Measurement in SNOLAB Underground Laboratory at Sudbury, Ontario, Canada
• Cryogenic setup for the characterization of wavelength-shifting materials for noble element radiation detectors
• A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC