光谱学与光谱分析, 2018, 38 (11): 3607, 网络出版: 2018-11-25  

γ射线辐照对含钆磷酸钡玻璃影响的光谱分析

Spectral Analysis of the Effects of γ-Irradiation on Gadolinium-Containing Barium Phosphate Glass
作者单位
1 四川中医药高等专科学校医疗技术学院, 四川 绵阳 621000
2 西南科技大学分析测试中心, 四川 绵阳 621000
3 西南科技大学材料科学与工程学院, 四川 绵阳 621000
摘要
为研制新型γ射线屏蔽材料, 采用熔融淬火法制备了xGd2O3-(50-x)BaO-50P2O5(0≤x≤7 mol%)系列玻璃样品, 并经60Co辐照源辐照, 利用UV-Vis-NIR, Raman等分析技术研究了玻璃的光学特性和微观结构。 结果表明, 玻璃在γ射线辐照下产生了磷氧空穴中心(Ⅰ类色心), 呈现棕色; Gd2O3能增强磷酸钡玻璃的抗γ辐照能力, 玻璃中Gd2O3含量越高, γ射线辐照导致的色心数量越少; 玻璃产生的色心数量会随着γ射线辐照剂量的增大而增加; Gd2O3加入降低了玻璃对可见光和近红外光的透过率; γ射线辐照使玻璃出现了光学吸收带损耗, 玻璃在紫外到可见光区的透过率降低; 玻璃样品的主要结构为Q2偏磷酸盐结构, 伴有少量Q1焦磷酸盐和Q0正磷酸盐结构; 玻璃微观网络结构在γ射线辐照下变化不明显。
Abstract
The xGd2O3-(50-x)BaO-50P2O5 (0≤x≤7 mol%) series of glass samples were prepared with melt quenching method to develop new γ-ray shielding materials and irradiated with 60Co irradiation source. The light transmission characteristics and microstructure of the glass were studied by UV-Vis-nir and Raman. γ-ray irradiation makes the glass produce phosphorus oxygen hole center (class Ⅰ color), presenting brown. The resistance of phosphate glass to γ irradiation was enhanced by Gd2O3. The higher the content of Gd2O3 in glass, the lower the number of color centers caused by γ-ray irradiation. The transmittance on visible and near infrared light regions were reduced with the addition of Gd2O3. γ-ray irradiation causes the glass to exhibit optical absorption band loss, and the transmittance of the glass in the ultraviolet to visible region is reduced. The glass samples are mainly based on Q2 partial phosphate structure, accompanied by Q1 pyrophosphate and Q0 orthophosphate glass structure, and γ-ray irradiation has little effect on the microstructure of glass.

余涛, 王军霞, 刘海峰, 梁晓峰, 杨世源, 罗庆. γ射线辐照对含钆磷酸钡玻璃影响的光谱分析[J]. 光谱学与光谱分析, 2018, 38(11): 3607. YU Tao, WANG Jun-xia, LIU Hai-feng, LIANG Xiao-feng, YANG Shi-yuan, LUO Qing. Spectral Analysis of the Effects of γ-Irradiation on Gadolinium-Containing Barium Phosphate Glass[J]. Spectroscopy and Spectral Analysis, 2018, 38(11): 3607.

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