7Be半衰期的精确测量

原子核物理评论 , 2003, 20(4): 235-238. doi: 10.3969/j.issn.1007-4627.2003.04.002

7Be半衰期的精确测量

刘志毅 ^1, , 李成波 ^2, , 王思广 ^3, , 周静 ^4, , 孟秋英 ^5, , 卢绍军 ^6, , 周书华 ^7, , 容超凡 ^8, , 袁大庆 ^9,

1.中国原子能科学研究院核物理研究所,北京,102413

2.中国原子能科学研究院核物理研究所,北京,102413

3.中国原子能科学研究院核物理研究所,北京,102413

4.中国原子能科学研究院核物理研究所,北京,102413

5.中国原子能科学研究院核物理研究所,北京,102413

6.中国原子能科学研究院核物理研究所,北京,102413

7.中国原子能科学研究院核物理研究所,北京,102413

8.中国原子能科学研究院计量测试部,北京,102413

9.中国原子能科学研究院计量测试部,北京,102413

基金项目: 中国原子能科研院院长基金(13HI13-ZSH)

关键词：电子俘获 , 衰变率 , 电子亲合势 , γ-谱

High Precision Measurement of Half-life of 7Be

用两套γ谱仪精确测量了注入到天然铍和天然金中的 7Be发生电子俘获的半衰期. 测得 7Be在天然铍中半衰期为53.275(25) d, 在天然Au中为53.270(19) d. 该结果还表明, 在这两种材料中 7Be半衰期的相对变化小于0.12%.

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7Be半衰期的精确测量

High Precision Measurement of Half-life of 7Be

参考文献