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Triplet Lifetime in Gaseous Argon

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arxiv 1903.06706 v2 pith:XGJSGTVV submitted 2019-03-15 physics.ins-det

classification physics.ins-det
keywords argontripletlifetimelightscintillationcoldcomponentsconstant
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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.

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Cited by 1 Pith paper

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  1. Quality control of PEN wavelength shifters for DarkSide-20k veto

    physics.ins-det 2025-02 conditional novelty 3.0 of 10

    ArGSet, a cryogenic argon-gas test rig, resolves single photoelectrons and detects about 321 photoelectrons from a PEN sample excited by 128 nm argon scintillation light, supporting its use for PEN quality control.

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