Changes

Detectors where the tracks of passing charged particles can subsequently be made visible by suitable chemical treatment and viewed microscopically. These passive detectors are plastic nuclear etched track detectors where the tracks are made visible by chemical etching or nuclear emulsions. Etched track detectors are generally insensitive for radiation with a LET in water below approximately 10 KeV µm^-1). ([[ICRP Publication 123]], 2013)