High Precision Measurement of Half-life of 7Be
-
摘要: 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%. The half-life of 7Be implanted in natural beryllium and in natural gold has been measured with high precision using two high-purity germanium detectors. T_(1/2)=53.275(25) d in natural beryllium and T_(1/2)=53.270(19) d in natural gold is obtained. Within our experimental precision, the difference in the effect of host media beryllium and gold on the half-life of 7Be isn t observed and an upper limit 0.12% of this effect can be set.Abstract: The half-life of 7Be implanted in natural beryllium and in natural gold has been measured with high precision using two high-purity germanium detectors. T_(1/2)=53.275(25) d in natural beryllium and T_(1/2)=53.270(19) d in natural gold is obtained. Within our experimental precision, the difference in the effect of host media beryllium and gold on the half-life of 7Be isn t observed and an upper limit 0.12% of this effect can be set.
-
Key words:
- electron capture /
- decay rate /
- electron affinity /
- γ-spectrum
-
![WeChat](/fileYZHWLPL/journal/article/yzhwlpl/2003/4/PIC/wechat_cn_386.jpg)
计量
- 文章访问数: 2129
- HTML全文浏览量: 106
- PDF下载量: 623
- 被引次数: 0