Development of BaSO4 : Eu thermoluminescence phosphor

摘要

A highly sensitive thermoluminescence (TL) phosphor based on BaSO4:Eu was developed following the coprecipitation technique and firing in argon atmosphere at 1123 K. Photoluminescence studies confirm that firing in argon atmosphere instead of air increased the incorporation of Eu ions in 2+ valence state. At low gamma-ray doses, its TL sensitivity is nearly 2 to 3 times higher than that of CaSO4:Dy phosphor. The other salient features of this BaSO4:Eu TL phosphor are a constant glow curve shape and a nearly linear gamma-ray dose response. (C) 1999 Elsevier Science Ltd. All rights reserved. [References: 19]