Neutral Bremsstrahlung in TPCs

Abstract

Traditionally, it has been assumed that electroluminescence (EL) in time projection chambers was purely an excimer-based emission. This idea changed when neutral bremsstrahlung (NBrS) was observed first in argon and subsequently in xenon a few years ago. In this work we explore further the framework used to explain these observations, presenting results for noble gas -based mixtures, as well as mixtures including small fractions of a molecular additive (`quencher'). Spectral content and yields are discussed in some cases of contemporary interest, together with their pressure-scalings.

References in corpus (11)

• Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment
• The XENON1T Dark Matter Experiment
• First observation of two-neutrino double electron capture in ${}^{124}$Xe with XENON1T
• Gaseous and dual-phase time projection chambers for imaging rare processes
• Revealing neutral bremsstrahlung in two-phase argon electroluminescence
• Electron Transport in Gaseous Detectors with a Python-based Monte Carlo Simulation Code
• SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range
• Helium-Xenon mixtures to improve topological signature in high pressure gas Xenon TPCs
• Neutral Bremsstrahlung emission in xenon unveiled
• Electroluminescence TPCs at the thermal diffusion limit
• AXEL: High-pressure Xe gas TPC for BG-free $0\nu 2\beta$ decay search

Cited by in corpus (2)

• Puzzling time properties of proportional electroluminescence in two-phase argon detectors for dark matter searches
• Study of visible-light emission in pure and methane-doped liquid argon