Thermoluminescence characteristics of rare-earth-doped LiCaBO3 phosphor

Dosimetric properties of rare earth doped LiCaBO3 thermoluminescence phosphors

“…1. The pattern is in good agreement with the reported XRD data of LiCaBO 3 in Wu et al [8] and Jiang et al [5]. Wu et al [9] prepared LiCaBO 3 from analytically pure Li 2 O, CaO and H 3 BO 3 in the molar ratio of 1:1:1 with sintering at 790 1C.…”

“…With dopants Tb and Ce, codoping of Ag improved the glow curve shape and intensity; codoping of Ag in LCB:Tb 3 + created a new glow peak at 240 1C, which showed the highest TL intensity among all the dopants tried. Jiang et al [5] reported that the main TL peak of LCB:Tm 3 + phosphor was about 291 1C and had a great over lap with its shoulder; therefore, although the TL sensitivity of this phosphor is the strongest, it did not carry further investigation on its potential use for dosimetric material. However, the TL dosimetric characteristics of LCB:Ce 3 + phosphor were studied because the TL intensity was considerably strong and the peak shape is simple and the main peak locates at 196 1C.…”

“…TL materials based on borates have an important place in dosimetry for their neartissue-equivalent absorption coefficient and neutron sensitivity [2,3]. Thermoluminescence (TL) characteristics of the mixed borate LiCaBO 3 (LCB) doped with rare earth elements [4,5] have been studied recently for the application as radiation dosimetry phosphor. Jiang et al [5] synthesized this phosphor by hightemperature solid state reaction.…”

“…Thermoluminescence (TL) characteristics of the mixed borate LiCaBO 3 (LCB) doped with rare earth elements [4,5] have been studied recently for the application as radiation dosimetry phosphor. Jiang et al [5] synthesized this phosphor by hightemperature solid state reaction. The influence of different rare earth dopants, i.e.…”

Dependence of peak height of glow curves on heating rate in thermoluminescence

“…For a given glow curve at a constant dose (assuming no thermal quenching), the light seen by the photomultiplier remains constant and is related to the area under the glow curve. In the literature there are large numbers of reports that demonstrate that for a constant dose, the glow peak height decreases with increase in heating rate [2]. However there are also reports indicating that the glow peak height increases with increase in heating rate [3][4][5].…”