Alpha-decay half-life of 221Fr in different environments
Alpha-decay half-life of 221Fr in different environments
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DOI：
10.1140/epja/i2007-10011-9
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发表时间：
2007-04
期刊：
影响因子：
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通讯作者：
H. Jeppesen;J. Byskov-Nielsen;P. Wright;J. Correia;L. Fraile;H. Fynbo;K. Johnston;K. Riisager
中科院分区：
文献类型：
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作者：
H. Jeppesen;J. Byskov-Nielsen;P. Wright;J. Correia;L. Fraile;H. Fynbo;K. Johnston;K. Riisager
通过测量室温下~（221）Fr在不同材料（Au、W、Si和聚乙烯）中的α衰变半衰期，研究了α衰变过程对衰变核固态环境的可能依赖性。绝缘体Si和金属Au/ W之间的半衰期变化分别为0.30（17）% / 0.42（21）%。此外，发现221 Fr的绝对半衰期值提高了4.79（2）min。
A possible dependence of the alpha decay process on the solid-state environment of the decaying nucleus has been investigated by measuring the alpha-decay half-life of221Fr at room temperature in different materials ( Au, W, Si and polyethylene). The change in half-life between the insulator Si and the metals Au/ W is found to be 0.30(17)% / 0.42(21)%, respectivly. Furthermore an improved value of 4.79(2)min was found for the absolute half-life of221Fr.