R-134a (C2H2F4) is a low cost, easily available and chlorine free refrigerant, which in its superheated state can be used as an efficient neutron detector. Due to its high solubility in water the R-134a based superheated droplet detectors (SDD) are usually very unstable unless the detector is fabricated using a suitable additive, which stabilizes the detector. The SDD is known to have superheated droplets distributed in a short-lived and in a relatively longer-lived metastable states. We have studied the detector response to neutrons using a 241AmBe neutron source and obtained the temperature variation of the nucleation parameters and the interstate kinetics of these droplets using a two-state model.
@article{arxiv.1309.2279,
title = {Characterization of R-134A superheated droplet detector for neutron detection},
author = {Prasanna Kumar Mondal and Rupa Sarkar and Barun Kumar Chatterjee},
journal= {arXiv preprint arXiv:1309.2279},
year = {2014}
}