New Insights into Particle Detection with Superheated Liquids
Abstract
We report new results obtained in calibrations of superheated liquid droplet detectors used in dark matter searches with different radiation sources (n,,). In particular, detectors were spiked with alpha-emitters located inside and outside the droplets. It is shown that the responses are different, depending on whether alpha particles or recoil nuclei create the signals. The energy thresholds for -emitters are compared with test beam measurements using mono-energetic neutrons, as well as with theoretical predictions. Finally a model is presented which describes how the observed intensities of particle induced acoustic signals can be related to the dynamics of bubble growth in superheated liquids. An improved understanding of the bubble dynamics is an important first step in obtaining better discrimination between particle types interacting in detectors of this kind.
Keywords
Cite
@article{arxiv.1011.4553,
title = {New Insights into Particle Detection with Superheated Liquids},
author = {S. Archambault and F. Aubin and M. Auger and M. Beleshi and E. Behnke and J. Behnke and B. Beltran and K. Clark and X. Dai and A. Davour and F. Debris. J. Farine and M. -H. Genest and G. Giroux and R. Gornea and R. Faust and H. Hinnefeld and A. Kamaha and C. B. Krauss and M. Lafrenière and M. Laurin and I. Lawson and C. Leroy and C. Lévy and L. Lessard and I. Levine and J. -P. Martin and S. Kumaratunga and R. MacDonald and R. Nadeau and A. Noble and M. -C. Piro and S. Pospisil and N. Starinski and I. Stekl and N. Vander Werf and U. Wichoski and V. Zacek},
journal= {arXiv preprint arXiv:1011.4553},
year = {2011}
}