Development of track detector discriminating nuclear ions by multi-coated color photographic material

Track detecting systems using silver-salt photographic materials were improved to analyze fragmentation reactions. Nuclear tracks by a range of developed silver grains with color cloud around them were recorded on the multi-coated film consisting of layers with different sensitivity and different coloring which distinguished each track by color. Sensitivity to radiation exposure was increased by post-exposure latensification with red light at low temperature and the appratus was improved. Relationships between light sensitivity and grain density GD for several photographic emulsions were investigated. Peak separation of GD for each nucleus was differed by the emulsion characteristics. (author)