Thermoluminescence in sintered CaF2:Tb.
In order to observe and estimate the dose of ultraviolet (UV) radiation, the thermoluminescence (TL) of sintered CaF2 doped with Tb4O7 and Sm2O3 was studied. A several kind of lanthanides elements are doped in pure CaF2 powder crystals and properties of the TL to UV radiation were observed. The TL intensity from CaF2:Tb was the highest among the samples doped other lanthanide elements. The TL emission may be due to the recombination reaction; Tb2+ + hole-->Tb3+*-->Tb3+ + hv. The TL peaks are observed at about 353 K, 378 K and 458 K. It was found that the 378 K TL peak intensity of CaF2:Tb became strong by addition of Sm2O3. The 378 K TL peak may also be suitable for use as a dosimeter.
Fukuda
Yasunori
Y
Department of Urban Environment, Osaka Sangyo University, Nakagaito 3-1-1, Daito, Osaka, 574-8530, Japan. fukuda@due.osaka-sandai.ac.jp
D002124:Calcium Fluoride / Q000528:radiation effects*; D006358:Hot Temperature; D010087:Oxides / Q000737:chemistry / Q000528:radiation effects; D010777:Photochemistry; D012062:Relative Biological Effectiveness; D012493:Samarium / Q000528:radiation effects; D012680:Sensitivity and Specificity; D013725:Terbium / Q000528:radiation effects*; D013819:Thermoluminescent Dosimetry; D014466:Ultraviolet Rays
D010087:Oxides; D013725:Terbium; D012493:Samarium; C120592:samarium oxide; D002124:Calcium Fluoride