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Radiography With Fast Neutrons By A Plastic Detector

The image recording of fast neutron radiographs can be achieved sufficiently by means of plastic foils and the track etching technique. The optimal etching conditions for cellulose nitrate foils were studied. A mathematical model for the dependence of the optical density on the area and number of the etch pits is given and compared to measurements. Finally, two examples of radiographic applications may underline the possible importance of this method.