Research output: Contribution to journal › Journal article
|Journal publication date||11/02/1996|
|Journal||Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Number of pages||3|
|Conference||6th International Workshop on Low Temperature Detectors (LTD6)|
|Period||28/08/95 → 1/09/95|
We have demonstrated in a pilot study using an existing experiment that superfluid He-3 at 100 mu K can be used as a nuclear recoil detector sensitive to neutron and gamma-ray interactions depositing energies down to a few hundred eV. The deposited energy is converted to He-3 quasiparticles which are detected by their effect on a vibrating wire resonator in the liquid. The system can be calibrated independently using a second vibrating wire as a heater but a convenient fixed point is provided by the exothermic reaction n + He-3(2) = p + H-3(1) + 764 keV. Given the great potential for improvement we propose that the system might make a sensitive WIMP detector.