Searching for universal behaviour in superheated droplet detector with effective recoil nuclei

Abstract

Energy calibration of superheated droplet detector is discussed in terms of the effective recoil nucleus threshold energy and the reduced superheat. This provides a universal energy calibration curve valid for different liquids used in this type of detector. Two widely used liquids, R114 and C4F10, one for neutron detection and the other for WIMPs dark matter search experiment, have been compared. Liquid having recoil nuclei with larger values of LET provides better neutron and gamma discrimination. Gamma response of C4F10 has also been studied and the results are discussed. Behaviour of nucleation parameter with the effective recoil nucleus threshold energy and the reduced superheat have been explored.

27 pages, 10 figs

References in corpus (6)

• Dark Matter Spin-Dependent Limits for WIMP Interactions on 19-F by PICASSO
• Discrimination of nuclear recoils from alpha particles with superheated liquids
• Response of Superheated Droplet Detectors of the PICASSO Dark Matter Search Experiment
• New Insights into Particle Detection with Superheated Liquids
• Development of Bubble Chambers With Enhanced Stability and Sensitivity to Low-Energy Nuclear Recoils
• Neutron-gamma discrimination by pulse analysis with superheated drop detector