Methodological Study on Change in Half Life of super(210)Po Embedded in a Metallic Medium at Ultra-Low Temperature

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 alpha -decay half-life values of super(210)Po in high purity meta...

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Bibliographic Details
Published in:Chinese physics letters 2012-01, Vol.29 (7), p.072301-1-072301-3
Main Authors: DONG, Ke-Jun, JIANG, Shan, HE, Ming, HE, Xian-Wen, RUAN, Xiang-Dong, GUAN, Yong-Jing, LIN, De-Yu, YUAN, Jian, WU, Shao-Yong
Format: Article
Language:English
Subjects:
Bismuth
Cryogenic temperature
Half life
Nuclides
Purity
Screening
Online Access:Get full text
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Summary: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 alpha -decay half-life values of super(210)Po in high purity metallic bismuth at 4.2K and 293 K. The results show that the alpha -decay half-life of super(210)Po at T = 4.2K is about (24 + or -8)% shorter than that at room temperature.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/29/7/072301