CaF_2:Tb, Smの熱蛍光による紫外線評価

概要

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Thermoluminescence (TL) phosphors available for the estimation of ultraviolet (UV) irradiation dose are examined. A several kind of lanthanide elements are doped in pure CaF_2 powder crystals and properties of the TL to UV radiation are observed. It is found that the TL intensity from the sintered CaF_2 doped with Tb_4O_7 is the highest among the samples doped other lanthanide elements. The TL peaks are observed at about 353 K, 378 K and 458 K. It is also found that the 378 K TL peak intensity of CaF_2:Tb became strong by addition of Sm_2O_3 .The 378 K TL peak may also be suitable for use as a dosimeter.
2005-06-30