| Enhancement of β^＋-Decay Rate of ^22Na in Metal Pd at Low Temperature |
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| 引用本文： | 连钢,苏俊,王宝祥,蒋超,白希祥,曾晟,郑永男,朱升云,竺礼华,柳卫平,李志宏,王友宝,郭冰,李云居,秦星.Enhancement of β^＋-Decay Rate of ^22Na in Metal Pd at Low Temperature[J].中国物理快报,2008,25(1):70-72. |
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| 作者姓名： | 连钢 苏俊 王宝祥 蒋超 白希祥 曾晟 郑永男 朱升云 竺礼华 柳卫平 李志宏 王友宝 郭冰 李云居 秦星 |
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| 作者单位： | China Institute of Atomic Energy, PO Box 275（46）, Beijing 102413 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10605039, and the Major State Basic Research Programme of China under Grant No 2007CB815003. The the Pd tandem authors thank Professor Xu Guoji for rolling foil and thank the staff at the CIAE HI-13 accelerator |
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| 摘 要： | Temperature dependence of nuclear decays in metallic environments is a controversial issue. We measured the temperature dependence of the β^＋-decay half-life of ^22Na implanted into the metal host of palladium. It is found that the β^＋-decay half-life of ^22Na in the metal Pd cooled to T = 15 K is shorter by 0.46（14）% than that at room temperature. The result is consistent in sign with, but dearly smaller than, the estimated one by the Debye model.
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| 关 键 词： | 核衰变 β衰变 钠 钯 低温环境 |
| 收稿时间： | 2007-10-16 |
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