Photoluminescence dosimetry : the alternative in personnel monitoring

Abstract

A new full automatic PLD system, consisting of a one-element photoluminescent glass and the readout system Toshiba FGD-10, is now commercially available, PTB type tested and introduced into routine monitoring. Mainly because of its glass specific dosimetric properties, the PLD system was found to be superior to film dosemeters and TLD systems. Under the aspect of routine application, the paper discusses the dosimetry system using pulsed UV-laser excitation and the dosimetric properties, such as energy and angular response, random uncertainty and ambient parameters affecting the dose measurement. The main advantages are the low pre-dose of (30±1) uSv of annealed glasses, the low coefficient of variation of 2% at 0.1 mSv which allows to measure doses above 10 p.Sv, the long-term stability of the dose measurement of about 1%, the

Radiophotoluminescence in Ag+-activated phosphate glass

“…It is seen that the PL spectrum consists of two emission bands at about 400 nm and 440 nm and excitation spectrum was peaked at about 240 nm. The 400 nm PL peak which is ascribed to Ag+ ions in the glass coincides with that reported by Piesch and Burgkhardt [4]. On the other hand, there is no report for PL peak at about 440 nm.…”

RPL in alpha particle irradiated Ag+-doped phosphate glass

“…In addition there is little dispersion on measured dose data among dosimeter elements ( (Ikegami, 1991;Nomura et al, 2002;Piesch and Burgkhardt, 1994). Fig.…”

“…Recently, these glasses have been, therefore, widely used as accurate dosimeters at many radiation facilities (Piesch and Burgkhardt, 1994). However, there has been little report about the RPL excitation and emission properties in the Ag þ -doped phosphate glass since Yokota's paper in 1969.…”

Dosimertry characteristics and performance comparisons: Environmental radiophotoluminescent glass dosemeters versus thermoluminescent dosemeters

“…In recent years, radiophotoluminescent glass dosemeter (RPLGD) has been recognized to possess good characteristics such as repeated readout capabilities, excellent batch uniformity in sensitivity and long-term stability against fading (Piesch et al, 1990;Piesch et al, 1993;Piesch and Burgkhardt, 1994;Burgkhardt et al, 1996). The environmental RPLGD system was first introduced into Taiwan by the INER in 2004 (Lin et al, 2004).…”