...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Absolute radioactivity measurement of 60Co, 134Cs and 166mHo by 4pibeta-gamma anti-coincidence method.
【24h】

Absolute radioactivity measurement of 60Co, 134Cs and 166mHo by 4pibeta-gamma anti-coincidence method.

机译：通过4pibeta-γ反符合法对60Co，134Cs和166mHo进行绝对放射性测量。

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

A 4pibeta-gamma anti-coincidence system has been developed for absolute radioactivity measurements with a HPGe gamma-spectrometer used as the gamma-ray detector and a 4pibeta proportional counter as the beta detector. The activity of 60Co, 134Cs and 166mHo have been measured with the combined standard uncertainties of 0.24%, 0.33% and 0.44%, respectively. Compared with the results of the National Institute of Metrology and 4pibeta-gamma coincidence counting system of the China Institute of Atomic Energy, the agreement of the results of 60Co and 134Cs is satisfactory. For 166mHo, the results obtained using other methods by most national and international labs lack sufficient accuracy due to the complex decay scheme of this radio-nuclide. It is also concluded that the result of anti-coincidence measurement is independent of beta efficiency.
机译：已经开发了4pibeta-γ反符合系统，用于绝对放射性测量，其中HPGeγ谱仪用作伽马射线探测器，而4pibeta比例计数器用作β探测器。测定了60Co，134Cs和166mHo的活度，组合标准不确定度分别为0.24％，0.33％和0.44％。与美国国家计量学会和中国原子能科学研究院的4pibeta-γ符合计数系统的结果相比，60Co和134Cs的结果令人满意。对于166mHo，由于该放射性核素的复杂衰减方案，大多数国家和国际实验室使用其他方法获得的结果缺乏足够的准确性。还得出结论，反符合测量的结果与beta效率无关。

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