• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Nuclear Physics, Material Sciences, Radiation and Applications >Synthesis of MgB4O7:Dy3+ and Thermoluminescent Characteristics at Low Doses of Beta Radiation
【24h】

Synthesis of MgB4O7:Dy3+ and Thermoluminescent Characteristics at Low Doses of Beta Radiation

机译：低剂量β辐射下MgB 4 O 7 ：Dy 3 + 的合成及热致发光特性

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The synthesis and thermoluminescent characteristics of dysprosium-doped MgB_(4)O_(7) are analyzed. The phosphor at different concentrations (0, 0.1, 0.5, 1, 2 and 4 mol%) of the dopant was prepared by the solution-assisted method. The magnesium borate compound was confirmed by X-ray diffraction. The annealing and dopant concentrations effects on the crystalline matrix were investigated. The highest thermoluminescent sensitivity was found with 450°C of annealing temperature and at high Dy~(3+) concentration too. The un-doped MgB_(4)O_(7) phosphor shows a broad glow curve which peaked at 199°C and about 306 °C. Introducing Dy~(3+) dopant in the matrix that behavior was strongly changed. The wide glow curve shows three glow peaks; two small shoulders at 124 and 195 °C, and a highest peak between 323 and 336 °C temperature range. A large linear dose-response (5 – 2000 mGy) beta dose was obtained. The complex glow curves were deconvolved and the kinetics parameters were determined considering the general order kinetics model.
机译：分析了掺dy的MgB_（4）O_（7）的合成和热致发光特性。通过溶液辅助法制备不同浓度（0、0.1、0.5、1、2和4mol％）的掺杂剂的磷光体。硼酸镁化合物通过X射线衍射确认。研究了退火和掺杂剂浓度对晶体基质的影响。在450℃的退火温度和高的Dy〜（3+）浓度下也发现了最高的热致发光灵敏度。未掺杂的MgB_（4）O_（7）磷光体显示出宽辉光曲线，该辉光曲线在199°C和约306°C时达到峰值。在基质中引入Dy〜（3+）掺杂剂，可以改变其行为。宽辉光曲线显示三个辉光峰。在124和195°C时有两个小肩部，最高峰值在323和336°C之间。获得了大的线性剂量反应（5-20​​00 mGy）β剂量。对复杂的辉光曲线进行反卷积，并考虑一般顺序动力学模型确定动力学参数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号