Radiative lifetime of the 1S0 metastable state in doubly charged Kr ions
Radiative lifetime of the 1S0 metastable state in doubly charged Kr ions
复制标题
双电荷 Kr 离子 1S0 亚稳态的辐射寿命
DOI：
10.1103/physreva.91.012508
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发表时间：
2015
影响因子：
2.9
通讯作者：
Y. Haruyama
中科院分区：
文献类型：
--
作者：
M. Saito;N. Ojima;S. Itoi;Y. Haruyama
用离子束存储型静电离子阱实验测定了亚稳态γ射线的辐射寿命。辐射寿命是通过测量在磁偶极跃迁过程中发射的350 nm光子的数量作为存储时间的函数来获得的。束流在阱中的贮存寿命是辐射寿命测定中的一个修正项，它是通过探测电子俘获碰撞产生的Kr中性粒子来测量的。我们得到了一个寿命值，这是大于以前的实验结果，但与理论预测一致。
The radiative lifetime of themetastable state inions has been experimentally determined using an electrostatic ion trap of the ion-beam storage type. The radiative lifetime was obtained by measuring the number of 350-nm photons emitted during themagnetic dipole transition ofas a function of the storage time. The storage lifetime of thebeam in the trap, which is a correction term in the determination of the radiative lifetime, was measured by detecting Kr neutrals produced by electron capture collisions with residual gases in the trap. We have obtained a lifetime value of, which is larger than the previous experimental results, but consistent with theoretical predictions.