[Inspection of inner structure of sealed 60Co sources by the autoradiography with radcolor film].
In studies using 60Co gamma-ray irradiation, an extremely high dose rate is often required and samples must be placed very near a 60Co source. The dose rate in the vicinity of the source depends on the inner structure of the source. Therefore, it is necessary to examine the distribution of source activity. As a method of the examination an autoradiographic technique using several coloring materials for irradiation was tried. The materials used were "Radcolor film" developed by our center, besides a glass, polymethylmethacrylate (PMMA) and a blue cellophane. Results showed that the autoradiography with Radcolor film is very useful to examine the position, the size and the activity difference of 60Co pieces by the change of color.
D001345:Autoradiography; D002476:Cellophane; D003037:Cobalt Radioisotopes; D003116:Color; D005720:Gamma Rays; D005898:Glass / Q000528:radiation effects; D008768:Methylmethacrylates / Q000528:radiation effects; D011829:Radiation Dosage; D014962:X-Ray Film
D003037:Cobalt Radioisotopes; D008768:Methylmethacrylates; D002476:Cellophane