Effect of Low Electric Fields on Alpha Scintillation Light Yield in Liquid Argon

Abstract

Measurements were made of scintillation light yield of alpha particles from the ${}^{222}$Rn decay chain within the DarkSide-50 liquid argon time projection chamber. The light yield was found to increase as the applied electric field increased, with alphas in a 200 V/cm electric field exhibiting a 2% increase in light yield compared to alphas in no field.

arXiv comment5 pages, 5 figures

References in corpus (4)

• First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso
• Results from the first use of low radioactivity argon in a dark matter search
• Measurement of Scintillation and Ionization Yield and Scintillation Pulse Shape from Nuclear Recoils in Liquid Argon
• The veto system of the DarkSide-50 experiment

Cited by in corpus (7)

• DarkSide-20k: A 20 Tonne Two-Phase LAr TPC for Direct Dark Matter Detection at LNGS
• DarkSide-50 532-day Dark Matter Search with Low-Radioactivity Argon
• Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC
• Measurement of ambient radon progeny decay rates and energy spectra in liquid argon using the MicroBooNE detector
• Long-term temporal stability of the DarkSide-50 dark matter detector
• Index of refraction, Rayleigh scattering length, and Sellmeier coefficients in solid and liquid argon and xenon
• Performance of the ReD TPC, a novel double-phase LAr detector with Silicon Photomultiplier Readout