Combined measurement of dose and α/γ radiation-field-components using the shape of composite peak 5 in the glow curve of LiF:Mg,Ti

•The combined use of 5a/5 peaks for beta/gamma and alpha particle separation in a mixed radiation field has been demonstrated.•A blind test demonstrated the reasonable accuracy of the technique.•The enhanced relative population of peak 7 to high LET could add further accuracy to these efforts.

The shape of composite peak 5 in the glow curve of LiF:Mg,Ti (TLD-100), specifically, the ratio of the intensity of peak 5a to peak 5, is employed to separately estimate the gamma and alpha particle components in a mixed radiation field. A blind test demonstrates the reasonable accuracy of the technique which yields results between 3.8% and 30%.