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A Thin-Layer Al2O3:C Beta TL Detector

DOI

29

Citations

0

References

1996

Year

M.S. Akselrod, S.W.S. McKeever, M. Moscovitch, Dimitris Emfietzoglou, J. Scott Durham, C. Guedes Soares
Radiation Protection Dosimetry

Abstract

High sensitivity thermoluminescence beta dosemeters based on Al<inf>2</inf>0<inf>3</inf>:C have been developed and tested. The detectors were developed in two configurations: (1) a thin powder layer of Al<inf>2</inf>O<inf>3</inf>:C of surface density from 2 to 5 mg.cm-2 mounted without a binder on aluminium substrates; (2) thin single crystals of 20 mg.cm-2 on a Kapton substrate. The dosimetric characteristics of the dosemeters are presented. It is shown that by optimising the combination of the cover thickness, the thickness of the sensitive layer, and the substrate thickness, a nearly flat beta energy response can be achieved.