Liquid 3He Detectors for Neutrons
Abstract
The 3He(n,p) process is excellent for neutron detection between thermal and 4\,MeV because of the high cross section and near-complete energy transfer from the neutron to the proton. Traditional gaseous 3He detectors using this process typically have high levels of radiogenic backgrounds so that they cannot measure the small neutron fluxes present in underground labs for dark matter experiments. I propose a cryogenic liquid 3He detector that can be designed with tiny radiogenic backgrounds and efficiently measure neutron fluxes in low-flux environments.
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