Procedure for Processing Nuclear-Track Emulsions

Procedures have been investigated for processing exposed Eastman NTB Nuclear Track Plates which have thicknesses in the range of (a) $100-175\mu$ and (b) $200-260\mu$. Processing recommendations are given for developing essentially all tracks of ionizing particles, including electron tracks. The process consists in initiating development at low temperature and allowing it to go to completion at a higher temperature, checking development in a cold acid stop bath, and fixing (with nitrogen agitation) first at low and later at a higher temperature.