Response of cellulose nitrate track detectors to electron doses

In order to study alternative dose determination methods, the bulk etching velocity and the latent track annealing of LR 115 track detectors was studi ed during electron irradiation runs from a Pelletron accelerator. For this purpose alpha irradiated and blank detectors were exposed to increasing ele ctron doses from 10.5 to 317.5 kGy. After the irradiation with electrons th e detectors were etched under routine conditions, except for the etching ti me, that was varied for each electron dose in order to reach a fixed residu al thickness. The variation of the bulk etching velocity as a function of e ach one of the electron doses supplied, was interpolated in order to obtain dosimetric response curves. The observed annealing effect on the latent tr acks is discussed as a function of the total electron doses supplied and th e temperature.