摘要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.
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.
DONG Ke-Jun, JIANG Shan, HE Ming, HE Xian-Wen, RUAN Xiang-Dong, GUAN Yong-Jing, LIN De-Yu, YUAN Jian, WU Shao-Yong. Methodological Study on Change in Half Life of 210Po Embedded in a Metallic Medium at Ultra-Low Temperature[J]. 中国物理快报, 2012, 29(7): 72301-072301.
DONG Ke-Jun, JIANG Shan, HE Ming, HE Xian-Wen, RUAN Xiang-Dong, GUAN Yong-Jing, LIN De-Yu, YUAN Jian, WU Shao-Yong. Methodological Study on Change in Half Life of 210Po Embedded in a Metallic Medium at Ultra-Low Temperature. Chin. Phys. Lett., 2012, 29(7): 72301-072301.
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