High-resolution laser spectroscopy of Al 27 - 32
High-resolution laser spectroscopy of Al 27 - 32
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Al 27 - 32 的高分辨率激光光谱
DOI：
10.1103/physrevc.103.014318
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发表时间：
2021
影响因子：
3.1
通讯作者：
Heylen H
中科院分区：
文献类型：
--
作者：
Heylen H
() 的超精细光谱已在 ISOLDE-CERN 设施中通过使用原子跃迁的共线激光光谱进行了测量。首次确定了放射性铝同位素的均方电荷半径以及先前未知的磁偶极矩 和电四极矩。电荷半径可能减小可能表明壳层闭合效应，这在 Al 链中可见，与壳层中的其他同位素链相反。使用来自手性有效场理论的多组二核子力和三核子力，将实验结果与在介质中相似性重整化群的价空间框架中的理论计算进行比较。虽然实验磁偶极矩和电四极矩的趋势得到了很好的再现，但理论低估了绝对值，这与早期的研究一致。此外，电荷半径的规模和趋势似乎对所选的相互作用非常敏感。
Hyperfine spectra of() have been measured at the ISOLDE-CERN facility via collinear laser spectroscopy using theatomic transition. For the first time, mean-square charge radii of radioactive aluminum isotopes have been determined alongside the previously unknown magnetic dipole moment ofand electric quadrupole moments of. A potentially reduced charge radius atmay suggest an effect of theshell closure, which is visible in the Al chain, contrary to other isotopic chains in theshell. The experimental results are compared with theoretical calculations in the framework of the valence-space in-medium similarity renormalization group using multiple sets of two- and three-nucleon forces from chiral effective field theory. While the trend of experimental magnetic dipole and electric quadrupole moments is well reproduced, the absolute values are underestimated by theory, which is consistent with earlier studies. Moreover, both the scale and trend of the charge radii appear to be very sensitive to the chosen interaction.