Kearfott Kimberlee J, Geoffrey West William, Rafique Muhammad
Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Blvd., Ann Arbor, MI 49109-2104, USA.
West Physics, 3825 Paces Walk SE, Suite 250, Atlanta, GA 30339, USA.
Appl Radiat Isot. 2015 May;99:155-61. doi: 10.1016/j.apradiso.2015.03.004. Epub 2015 Mar 4.
This paper reports on an investigation into the optically stimulated luminescence (OSL) properties of several known thermoluminescent materials, namely LiF:Mg,Ti, Li2B4O7:Cu, CaSO4:Tm, and CaF2:Mn. Samples were irradiated to air doses of 15mGy, 150mGy and 1.5Gy and analyzed using a commercially available OSL reader system to determine their luminescence response to continuous blue and infrared light (IR) excitation, centered at 470nm and 830nm wavelengths, respectively. CaF2:Mn did not show an OSL response with either IR or blue light stimulation. Li2B4O7:Cu and LiF:Mg,Ti demonstrated relatively weak OSL signals only under blue light excitation. CaSO4:Tm exhibited OSL under both IR and blue light stimulation at sensitivities roughly one order of magnitude less than the OSL response of α-Al2O3:C under the same conditions.
本文报道了对几种已知热释光材料，即LiF:Mg,Ti、Li2B4O7:Cu、CaSO4:Tm和CaF2:Mn的光激发发光（OSL）特性的研究。样品分别接受15mGy、150mGy和1.5Gy的空气剂量照射，并使用市售的OSL读取器系统进行分析，以确定它们对分别以470nm和830nm波长为中心的连续蓝光和红外光（IR）激发的发光响应。CaF2:Mn在红外或蓝光刺激下均未表现出OSL响应。Li2B4O7:Cu和LiF:Mg,Ti仅在蓝光激发下表现出相对较弱的OSL信号。CaSO4:Tm在红外和蓝光刺激下均表现出OSL，其灵敏度比相同条件下α-Al2O3:C的OSL响应低约一个数量级。
