Patent ID: 9720111
Date: 2017-08-01
CPC Classifications: G01N,G01T,G01V

Claim:
1. An apparatus comprising a neutron detector, the neutron detector comprising: a conversion layer comprising a mixture of a neutron absorbing material and a scintillation material; a light-guide arranged to receive photons emitted from the scintillation material; and a photodetector optically coupled to the light-guide and arranged to detect photons generated as a result of neutron absorption events in the conversion layer; wherein the apparatus is adapted to be carried by a user and the conversion layer is positioned within the neutron detector such that when the apparatus is being carried by a user in normal use neutrons are absorbed in the conversion layer after passing through the user; wherein the conversion layer and the light-guide are arranged together to form a neutron detector element having a thickness which is less than 10 mm.