Abstract: A device for detecting neutron emission comprises a housing, a moderator structure, a neutron detection element, and a plurality of plate electrodes. The housing provides an enclosure and shielding from radiation other than neutron emission. The moderator structure is positioned within the housing and is formed from energy absorbing material. The moderator structure includes a first side wall and a second side wall spaced apart and oriented parallel to one another. The neutron detection element includes a neutron reactive material deposited on a planar substrate. The plate electrodes are formed from electrically conductive material and spaced apart from one another. Each adjacent pair of plate electrodes has a voltage therebetween, wherein one neutron detection element is positioned between adjacent pairs of plate electrodes and the combination of plate electrodes and neutron detection elements is positioned between the first side wall and the second side wall of the moderator structure.