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1.燕山大学 信息科学与工程学院, 河北省特种光纤与光纤传感实验室, 河北 秦皇岛 066004
2.燕山大学理学院 河北省微结构材料物理重点实验室, 河北 秦皇岛 066004
3.秦皇岛本征晶体科技有限公司, 河北 秦皇岛 066000
4.燕山大学 环境与化学工程学院, 河北 秦皇岛 066004
[ "田东升(1982-),男,内蒙古呼和浩特人,硕士,实验师,2007年于上海理工大学获得硕士学位,主要从事凝聚态物理的研究。" ]
[ "徐悟生(1972-),男,黑龙江哈尔滨人,博士,高级工程师,2004年于哈尔滨工业大学获得博士学位,主要从事无机非金属材料的研究。" ]
[ "贾永超(1986-),男,河北邢台人,博士,讲师,2014年于中国科学院长春应用化学研究所获得博士学位,主要从事稀土发光材料的设计与第一性原理的研究。" ]
[ "徐朝鹏(1977-),男,黑龙江伊春人,博士,教授,2006年于哈尔滨工业大学获得博士学位,主要从事光电信息功能材料的研究。 E-mail: xuzhaopeng1@163.com" ]
收稿日期:2023-07-25,
修回日期:2023-08-10,
纸质出版日期:2023-10-05
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田东升,张斌,尹祖荣等.锌铊共掺碘化钠晶体的生长及闪烁性能[J].发光学报,2023,44(10):1797-1802.
TIAN Dongsheng,ZHANG Bin,YIN Zurong,et al.Growth and Scintillation Properties of Zinc and Thallium-codoped Sodium Iodide Crystals[J].Chinese Journal of Luminescence,2023,44(10):1797-1802.
田东升,张斌,尹祖荣等.锌铊共掺碘化钠晶体的生长及闪烁性能[J].发光学报,2023,44(10):1797-1802. DOI: 10.37188/CJL.20230171.
TIAN Dongsheng,ZHANG Bin,YIN Zurong,et al.Growth and Scintillation Properties of Zinc and Thallium-codoped Sodium Iodide Crystals[J].Chinese Journal of Luminescence,2023,44(10):1797-1802. DOI: 10.37188/CJL.20230171.
采用坩埚下降法生长了NaI∶Zn(0,0.05%,0.08%,0.4%),Tl(0.18%)晶体。对晶体样品进行了X射线粉末衍射、电感耦合等离子体发射光谱以及紫外可见近红外透射光谱测试。结果表明,生长的晶体具有单一的物相,Zn和Tl离子掺杂并没有改变NaI的晶体结构;随着Zn掺杂浓度的增加,晶体内的Zn
2+
离子浓度增加、Tl
+
离子浓度下降;晶体透过率随Zn掺杂浓度的增加呈现先增大后减小的趋势,Zn掺杂浓度为0.08%时,样品的透过率最高,且所有样品在350~700 nm波段的透过率均高于70%。经过切割、打磨、抛光、封装等工序将NaI∶Zn,Tl晶体封装成辐射探测元件。闪烁性能测试结果表明,在
137
Cs放射源激发下,Zn掺量为0.05%、0.08%时的NaI∶Zn,Tl晶体的能量分辨率≤6.80%,光输出相对于NaI∶Tl晶体增加6%~10%,这有利于NaI晶体在高能粒子探测领域的进一步应用。
NaI∶Zn(0, 0.05%, 0.08%, 0.4%),Tl(0.18%) crystals were grown using Bridgman method respectively. The crystal samples were tested by X-ray powder diffraction, inductively coupled plasma emission spectra, and ultraviolet-visible near-infrared transmission spectra. The results show that the grown crystals have a single phase, and the crystal structure of NaI does not change with Zn and Tl ions doping. As the doping concentration of Zn increases, the concentration of Zn
2+
ions in the crystal increases, while the concentration of Tl
+
ions decreases. The transmittance shows a trend of firstly increasing and then decreasing with the increase of Zn doping concentration. When the doping concentration of Zn is 0.08%, the transmittance of the sample is the highest. The transmittance of all the NaI∶Zn,Tl crystals is higher than 70% in the 350-700 nm wavelength range. After cutting, polishing, and packaging processes, NaI∶Zn,Tl crystals were enveloped into radiation detection components. The scintillation performance test results showed that under the excitation of a
137
Cs radiation source, the energy resolution of NaI∶Zn,Tl crystals with Zn doping of 0.05% and 0.08% were less than 6.80%, and the light output increased 6%-10% compared with that of NaI∶Tl crystal. This is conducive to the further application of NaI crystals in the field of high-energy particle detection.
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