LiF Thermoluminescence for Neutron Image Storage

A thermoluminescent method for displaying thermal-neutron images is described. A sheet of ⁶ LiF, exposed to the imaging neutrons for periods as long as is necessary to capture the image, can be made to reproduce the image by means of the light emission produced by heating at anytime after the exposure. The excellent storage capability of this detection method makes it attractive for use with relatively low intensity neutron radiographic beams.