类似碳的Ca^{14+}的兴奋状态磁性特性
Lukas J Spieß1, Shuying Chen1, Alexander Wilzewski1
1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany.
我们测量了Ca^{14+}离子中兴奋状态P_{1}的g系数,实现了高精度. 这项研究强调了高电荷离子是先进光学时钟的前景,因为它们的Zeeman灵敏度很低.
科学领域:
- 原子物理 原子物理
- 量子光学是一种量子光学.
- 高精度测量 高精度测量
背景情况:
- 高电荷离子 (HCI) 对于推进光学时钟技术至关重要.
- 了解它们的磁性属性是提高时钟稳定性和精度的关键.
研究的目的:
- 精确测量14+离子中P1状态的g系数.
- 为了确定 ^{3}P_{0}-^{3}P_{1} 时钟过渡的二次齐曼系数 (C2).
- 在高精度光谱学中验证HCI的理论模型.
主要方法:
- 使用线性保罗陷来共同捕捉Ca^{14+} 和Be^{+} 离子.
- 通过Zeeman分裂成Be^{+}离子来确定磁场强度.
- 使用原子光谱技术测量了g因子和C2.
主要成果:
- 测量了Ca^{14+} ^{3}P_{1}状态的g因子,即g=1.499032(6) 具有4×10^{-6}的相对不确定性.
- 确定了二次 Zeeman 系数 C2 = 0.39±0.04 Hz mT^{-2} 的 ^{3}P_{0}-^{3}P_{1} 过渡.
- 实现了任何原子转换报告的最低C2,证实了HCIs对更高阶Zeeman效应的低敏感性.
结论:
- 像Ca^{14+}这样的高电荷离子是下一代光学钟的优秀候选者.
- 实验结果与先进的理论计算一致,包括布雷特,负能量状态和QED效应.
- 这项工作促进了对HCI用于精度测量的磁性质的理解.
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