论文标题
光离子的高精度质谱仪
High-precision mass spectrometer for light ions
论文作者
论文摘要
光原子核的原子质量的精确知识，例如对于几种物理学的基本测试，质子，Deuteron，Triton和Helion非常重要。但是，在不同的质谱仪上进行的这些质量的最新高精度测量结果表明，五个标准偏差的不一致。为了确定最轻的离子的质量，相对精度为每万亿美元，并研究了这个质量问题，构建了低温多启动陷阱设置Liontrap（轻离子陷阱）。与单个碳离子相比，这可以通过测量单个捕获离子的回旋频率来独立，更精确地确定相关的原子质量。在本文中，提出了测量概念和第一个双重补偿的圆柱电极笔陷阱。此外，详细描述了对质子和氧气原子质量的首次测量运动的分析，导致MP = 1.007 276 466 598（33）U和M（16o）= 15.994 914 914 619 37（87）u。这些数据集的结果已经在[F中提出。 Heisse等人，物理。莱特牧师。 119，033001（2017）]。对于质子的原子质量，与2014年尾巴值相比，不确定性提高了三倍。
The precise knowledge of the atomic masses of light atomic nuclei, e.g. the proton, deuteron, triton and helion, is of great importance for several fundamental tests in physics. However, the latest high-precision measurements of these masses carried out at different mass spectrometers indicate an inconsistency of five standard deviations. To determine the masses of the lightest ions with a relative precision of a few parts per trillion and investigate this mass problem a cryogenic multi-Penning trap setup, LIONTRAP (Light ION TRAP), was constructed. This allows an independent and more precise determination of the relevant atomic masses by measuring the cyclotron frequency of single trapped ions in comparison to that of a single carbon ion. In this paper the measurement concept and the first doubly compensated cylindrical electrode Penning trap, are presented. Moreover, the analysis of the first measurement campaigns of the proton's and oxygen's atomic mass is described in detail, resulting in mp = 1.007 276 466 598 (33) u and m(16O)= 15.994 914 619 37 (87) u. The results on these data sets have already been presented in [F. Heisse et al., Phys. Rev. Lett. 119, 033001 (2017)]. For the proton's atomic mass, the uncertainty was improved by a factor of three compared to the 2014 CODATA value.
