Study of low frequency acoustic signals from superheated droplet detector

TL;DR

This study investigates the acoustic signals generated by neutron and gamma-ray interactions in a superheated droplet detector, revealing distinct waveform characteristics that could aid in particle discrimination.

Contribution

The paper provides a comparative analysis of low-frequency acoustic signals from neutron and gamma-ray induced nucleation in a superheated droplet detector, highlighting differences in waveform features.

Findings

Significant waveform differences between neutron and gamma-ray events

Distinct acoustic signatures can be used for particle discrimination

Analysis in 0-10 kHz range reveals key differences

Abstract

The bubble nucleation process in superheated droplet detector (SDD) is associated with the emission of an acoustic pulse that can be detected by an acoustic sensor. We have studied the neutron and gamma-ray induced nucleation events in a SDD with the active liquid R-12 (CCl2F2, b.p. -29.8oC) using a condenser microphone sensor. A comparative study in the low frequency region (~ 0-10kHz) for the neutron and gamma-ray induced nucleation is presented here. From the analysis of the waveforms we observe a significant difference between the neutron and gamma-ray induced acoustic events.