Takeshi Takahara

Discriminated neutron and X-ray radiography using multi-color scintillation detector

Abstract A new conversion screen Gd2O2S:Eu is developed, which emits red light on irradiation by thermal neutrons. By applying this in combination with the currently used Gd2O2S:Tb, a green-light scintillator, in the radiography under a neutron + X-ray coexisting field, we can easily separate the neutron image and the X-ray image by simple color-image processing. This technique enables a non-destructive and detailed inspection of industrial products composed both of light elements (water, plastics, etc.) and heavy elements (metals), widening the horizon of new applications.

New Device for Discriminated Neutron and X-Ray Radiography using Multi-Color Scintillators

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).