A new method to check the change in α-decay half-life of <sup>210</sup>Po in metal at 4.2 K

HE Xianwen 1; 2 JIANG Shan 1 HE Ming 1 RUAN Xiangdong 2 HE Guozhu1 DONG Kejun 1 LI Chaoli 1 1

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A new method to check the change in α-decay half-life of ²¹⁰Po in metal at 4.2 K

更新时间：2021-03-05

- A new method to check the change in α-decay half-life of ²¹⁰Po in metal at 4.2 K
- NUCLEAR TECHNIQUES Vol. 34, Issue 7, (2011)
- 作者机构：
  
  1. 中国原子能科学研究院
  2. 广西大学物理学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(10491085)资助
- DOI：
  CLC： O571.321
- Published：01 July 2011
- 稿件说明：
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[1]何贤文,姜山,何明,阮向东,贺国珠,董克君,李朝历.检测4.2K低温金属环境下~(210)Po-α衰变半衰期变化的实验方法[J].核技术,2011,34(07):503-506.

HE Xianwen 1, 2 JIANG Shan 1 HE Ming 1 RUAN Xiangdong 2 HE Guozhu1 DONG Kejun 1 LI Chaoli 1 1. A new method to check the change in α-decay half-life of ²¹⁰Po in metal at 4.2 K[J]. Nuclear techniques, 2011, 34(7): 503-506.
[1]何贤文,姜山,何明,阮向东,贺国珠,董克君,李朝历.检测4.2K低温金属环境下~(210)Po-α衰变半衰期变化的实验方法[J].核技术,2011,34(07):503-506. DOI：

HE Xianwen 1, 2 JIANG Shan 1 HE Ming 1 RUAN Xiangdong 2 HE Guozhu1 DONG Kejun 1 LI Chaoli 1 1. A new method to check the change in α-decay half-life of ²¹⁰Po in metal at 4.2 K[J]. Nuclear techniques, 2011, 34(7): 503-506. DOI：

摘要

针对当前超低温金属环境下放射性核素α衰变半衰期变化实验研究存在的问题

建立了一种测量金属Bi环境下核素210Po-α衰变半衰期的新方法:创建放射性核素210Po处于4.2 K液氦、完全金属环境和金属氧化物环境。放射性衰变计数α谱学方法测量不同环境中的210Po的半衰期及其变化。初步实验表明

210Po在超低温（4.2 K）金属环境下α衰变的半衰期

与常温下半衰期相比有明显的减小

此实验结果与德拜模型预言半衰期将缩短的倾向基本一致。

Abstract

In order to solve problems in measuring α-decay half-life of 210Po in metal at ultra-low temperature

a new method to check the change in α-decay half-life of 210Po nuclide in metal at 4.2 K is proposed.A significant decrease of the half-life of 210Po in metal Bi at 4.2 K is observed.The half-life of 210Po was 105.2±4.4 d at 4.2 K

while it is 138.5±1.4 d at room temperature

with difference of 24.1%.The experimental result was consistent with the prediction tendency of the Debye-Huchel model.

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Related Author

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Related Institution

Key Laboratory of Advanced Micro-Structure Materials (MOE), Tongji University

School of Physics Science and Engineering, Tongji University

Institute of Modern Physics, Chinese Academy of Sciences

Department of Nuclear Physics, China Institute of Atomic Energy

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus

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A new method to check the change in α-decay half-life of 210Po in metal at 4.2 K

DOI：

摘要

Abstract

关键词

Keywords

references

A new method to check the change in α-decay half-life of ²¹⁰Po in metal at 4.2 K