Critical distances in geometry factor calculations using solid state nuclear track detectors (SSNTD)

Abstract

It has been shown that the normally used geometry factor formulae have limitations when applied to systems using solid state nuclear track detectors (SSNTDs) instead of the conventional detectors. Critical distances (the distance below which the conventional geometry factor formulae need modification) for point and extended sources and track detectors of different sizes have been determined. The results indicate that for a fixed detector size, the critical distance increases with (a) increasing critical angle of etching, (b) decreasing effective charge of particle, and (c) increasing size of the extended source.