Screening of abnormal LiF:Mg,Cu,P glow curves

A process to screen electronically abnormal LiF:Mg,Cu,P glow curves in routine dosimetry is proposed. The method is based on the fact that when a glow curve is normalised to a part of the integral of the glow curve it loses its dependence on the magnitude of the exposure. This characteristic allows a glow curve from a dosemeter exposed in the field to be compared with an 'ideal' glow curve from the same dosemeter. A difference curve is generated from the differences between the normalised 'ideal' and the normalised field curves. This difference curve can be used to identify the abnormal characteristics of the field-generated glow curve and, since both normalised curves are essentially the same, the anomalies can be resolved by reconstructing the field curve to match the 'ideal' curve.