Towards measuring nuclear-spin-dependent and isotopic-chain atomic parity violation in ytterbium
Towards measuring nuclear-spin-dependent and isotopic-chain atomic parity violation in ytterbium
复制标题
测量镱中核自旋依赖性和同位素链原子宇称违反
DOI：
10.1007/978-3-540-74413-9_31
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
V. Yashchuk
中科院分区：
文献类型：
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作者：
K. Tsigutkin;J. Stalnaker;J. Stalnaker;D. Budker;D. Budker;S. J. Freedman;S. J. Freedman;V. Yashchuk
讨论了镱原子（Z=70）6s2 1S0 → 5d6s3D1跃迁（408nm）中原子宇称非守恒效应的测量实验。根据理论预测，这种转变的PNC诱导的E1振幅比Cs中的类似振幅大100倍。这样的实验将确定奇中子数Yb同位素的不同超精细组分之间PNC效应的差异，从而将允许测量具有未成对中子的核中的核阿那极矩。此外，不同同位素的PNC测量将提供核内中子分布的信息。本实验设计和建造的装置进行了描述，并对影响精度的系统性影响的理解测量的结果，和正在进行的PNC测量的当前状态。
We discuss experiments aimed at measurements of atomic parity nonconservation (PNC) effects in the 6s2 1S0 → 5d6s 3D1 transition (408 nm) in atomic Ytterbium (Z=70). According to theoretical predictions, the PNC-induced E1 amplitude of this transition is ∼ 100 times larger than the analogous amplitude in Cs. Such an experiment will determine differences in PNC effects between different hyperfine components for odd-neutron-number Yb isotopes and, thereby, will allow measurements of the nuclear anapole moments in nuclei with unpaired neutrons. In addition, measurements of PNC in different isotopes would give information on neutron distributions within the nuclei. The apparatus designed and built for this experiment is described, and results of measurements towards understanding of systematic effects influencing the accuracy, and the current status of the ongoing PNC measurements are presented.