Development of multi-color scintillation imaging

Abstract

  A new conversion screen Gd₂O₂S:Eu has been developed which emits red light on thermal neutron irradiation. By using this in combination with the current green-light scintillator (Gd₂O₂S:Tb) in radiography under a neutron ＋ X-ray field, we can easily separate the neutron and the X-ray images on PC with any color-graphic software in the market. This technique leads us to a new possibility of non-destructive and high-precision inspection of industrial products composed both of light elements (organic compounds and plastics) and heavy elements (metals).