Photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen
arXiv:1702.03612 · doi:10.1209/0295-5075/117/39002
Abstract
We present a comprehensive analysis of photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen. The dopants are aimed to convert the VUV emission of pure Ar to the UV emission of the Xe dopant in the liquid phase and to the near UV emission of the N2 dopant in the gas phase. Such a mixture is relevant to two-phase dark matter and low energy neutrino detectors, with enhanced photon collection efficiency for primary and secondary scintillation signals. Based on this analysis, we show that the recently proposed hypothesis of the enhancement of the excitation transfer from Ar to N2 species in the two-phase mode is either incorrect or needs assumption about a new extreme mechanism of excitation transfer coming into force at lower temperatures, in particular that of the resonant excitation transfer via ArN2 compound (van der Waals molecule).
6 pages, 1 figure, 1 table
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- Dark Matter Results from 225 Live Days of XENON100 Data
- First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso
- Liquid noble gas detectors for low energy particle physics
- Detection of reactor antineutrino coherent scattering off nuclei with a two-phase noble gas detector
- Measurement of the two-photon absorption cross-section of liquid argon with a time projection chamber
- Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV
Cited by in corpus (7)
- Electroluminescence and electron avalanching in two-phase detectors
- Neutral Bremsstrahlung emission in xenon unveiled
- Neutral bremsstrahlung electroluminescence in noble liquids
- Measurement of the ionization yield of nuclear recoils in liquid argon using a two-phase detector with electroluminescence gap
- Further studies of proportional electroluminescence in two-phase argon
- Observation of unusual slow components in electroluminescence signal of two-phase argon detector
- Observation of primary scintillations in the visible range in liquid argon doped with methane