Single grain OSL analysis: A discussion of how to clean and check single-grain discs

Abstract

We compare possible methods to remove grains from single grain discs including heating, tapping, vibration in a sieve shaker and use of an ultrasonic bath. These methods are quick, simple and effective at removing smaller grains or those that have become stuck as a consequence of settling during pre-heating. Holders for single grain discs to facilitate thermal and vibrational cleaning approaches have been designed and manufactured. Heating and tapping seem to be useful additional techniques for cleaning single grain discs, resulting in insignificant residual sensitivity in the majority of cases.