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Methodological Study on Change in Half Life of 210Po Embedded in a Metallic Medium at Ultra-Low Temperature |
| DONG Ke-Jun1, JIANG Shan1**, HE Ming1, HE Xian-Wen1, RUAN Xiang-Dong2, GUAN Yong-Jing2, LIN De-Yu1,2, YUAN Jian1, WU Shao-Yong1 |
1China Institute of Atomic Energy, P.O. Box 275(50), Beijing 102413
2College of Physics Science and Technology, Guangxi University, Nanning 530004 |
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DONG Ke-Jun, JIANG Shan, HE Ming et al 2012 Chin. Phys. Lett. 29 072301 |
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Abstract It has been claimed that the half-life of radioactive nuclides embedded in metals may be significantly affected by the screening of quasi-free electrons provided by the metals, especially at the cryogenic temperature. We determine the α-decay half-life values of 210Po in high purity metallic bismuth at 4.2 K and 293 K. The results show that the α-decay half-life of 210Po at T=4.2 K is about (24 ±8)% shorter than that at room temperature.
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Received: 18 January 2012
Published: 29 July 2012
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