Research output: Contribution to Journal/Magazine › Journal article › peer-review
The detection of low energy neutrons and gamma-rays by superfluid He-3, a potential dark matter detector. / Bradley, D.I.; Follows, MR; Hayes, WM et al.
In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 370, No. 1, 11.02.1996, p. 141-143.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The detection of low energy neutrons and gamma-rays by superfluid He-3, a potential dark matter detector
AU - Bradley, D.I.
AU - Follows, MR
AU - Hayes, WM
AU - Sloan, T
PY - 1996/2/11
Y1 - 1996/2/11
N2 - 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.
AB - 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.
U2 - 10.1016/0168-9002(95)01066-1
DO - 10.1016/0168-9002(95)01066-1
M3 - Journal article
VL - 370
SP - 141
EP - 143
JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1
T2 - 6th International Workshop on Low Temperature Detectors (LTD6)
Y2 - 28 August 1995 through 1 September 1995
ER -