Fading Characteristics of Thermoluminescent Lithium Fluoride

Abstract
In view of conflicting results on the fading characteristics of LiF, a careful reinvestigation has been made on possible fading of the commonly used phosphor, LiF TLD-100 [thermoluminescent dosimeter]. Measurements over a 12 week period on freshly irradiated powder from a new batch, and also on some old powder, indicate fading of 5+3%, most of which may be due to changes in sensitivity-after annealing. Recommendations are made for the proper use of the phosphor in radiation dosimetry applications.