12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Potential dark matter detector?
View graph of relations

« Back

Potential dark matter detector?: the detection of low energy neutrons by superfluid 3He

Research output: Contribution to journalJournal article

Published

Journal publication date4/09/1995
JournalPhysical review letters
Journal number10
Volume75
Number of pages4
Pages1887-1890
Original languageEnglish

Abstract

Using an existing experiment we have demonstrated in a pilot study that superfluid He-3 at 100 mu K can be used as a nuclear recoil detector sensitive to neutron and gamma interactions depositing energies down to a few hundred eV. The deposited energy is converted to He-3 quasiparticles which are detected by their damping effect on a vibrating wire resonator in the liquid. The system can be calibrated independently 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 weakly interacting massive particle detector.