Estimation of radiative half-life of 229mTh by half-life measurement of other nuclear excited states in 229Th
Estimation of radiative half-life of 229mTh by half-life measurement of other nuclear excited states in 229Th
复制标题
通过 229Th 其他核激发态的半衰期测量估算 229mTh 的辐射半衰期
DOI：
10.1103/physrevc.104.024306
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发表时间：
2021
影响因子：
3.1
通讯作者：
Yoshimura K.
中科院分区：
文献类型：
--
作者：
Shigekawa Y.;Yamaguchi A.;Suzuki K.;Haba H.;Hiraki T.;Kikunaga H.;Masuda T.;Nishimura S.;Sasao N.;Yoshimi A.;Yoshimura K.
我们在α粒子和γ射线之间进行符合测量，以确定无核激发态的半衰期。我们首先证明了42.43-和164.53-keV态的半衰期与文献值一致，而97.14-keV态的半衰期[93（7）ps]偏离了先前测量的值[147（12）ps]。首次测定了71.83和163.25 keV态的半衰期。基于所得到的半衰期和Alaga规则，我们估计了低能同质异能态的辐射半衰期，这是基于的频率标准的关键参数之一。
We perform coincidence measurements betweenαparticles andγrays from asource to determine the half-lives of the excited state in anucleus. We first prove that the half-lives of 42.43- and 164.53-keV states are consistent with literature values, whereas that of the 97.14-keV state [93(7) ps] deviates from a previously measured value [147(12) ps]. The half-lives of 71.83- and 163.25-keV states are determined for the first time. Based on the obtained half-lives and the Alaga rule, we estimate the radiative half-life of the low-energy isomeric stateto bes, which is one of the key parameters for the frequency standard based on.