# Neutral bremsstrahlung in two-phase argon electroluminescence: further studies and possible applications

## TL;DR

This paper investigates the neutral bremsstrahlung effect in two-phase argon electroluminescence, remeasures its yield, and discusses potential applications in detection science, especially in dark matter detectors.

## Contribution

It provides new measurements of the NBrS electroluminescence yield in two-phase argon and explores its possible applications in detection technologies.

## Key findings

- Re-measured the NBrS EL yield in pure gaseous argon.
- Confirmed the significance of NBrS in two-phase electroluminescence.
- Discussed potential uses in dark matter detection.

## Abstract

We further study the effect of neutral bremsstrahlung (NBrS) in two-phase argon electroluminescence (EL), revealed recently in [1]. The absolute EL yield due to NBrS effect, in the visible and NIR range, was remeasured in pure gaseous argon in the two-phase mode, using a two-phase detector with EL gap read out directly by cryogenic PMTs and SiPMs. Possible applications of the NBrS effect in detection science are discussed, including those in two-phase dark matter detectors.