发表机构
GSI, Helmholtzzentrum für Schwerionenforschung; Institut für Kernphysik, Forschungszentrum Jülich; III. Physikalisches Institut B, RWTH Aachen; Heinrich-Heine-Universität Düsseldorf; Institut für Kernphysik, Universität zu Köln; FH Aachen Campus Jülich; Peter-Grünberg-Institut, Forschungszentrum Jülich（GSI 重离子研究中心; 于利希研究中心核物理研究所; 亚琛工业大学第三物理研究所B; 杜塞尔多夫海因里希·海涅大学; 科隆大学核物理研究所; 亚琛应用技术大学于利希校区; 于利希研究中心彼得·格林伯格研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文介绍了一种基于Lamb位移极化计的探测器系统，用于验证$^3$He$^{2+}$离子源的核极化值，其可在10-100 keV低能下工作并实现秒级快速评估。
AI 中文摘要
在高能物理实验中，$^3$He$^{2+}$核子适合测试中子的内部结构，使其成为完美的替代品。此外，它是通过光泵浦方法可实现高极化值的原子种类之一。因此，目前正在开发用于$^3$He$^{2+}$离子的核极化源。因此，需要建立验证其核极化值的探测器系统。本文介绍了一种基于Lamb位移极化计的此类探测器系统。其优势在于它可以在10至100 keV的低能量范围内工作，这使得预加速变得不必要。此外，在几秒内快速评估核极化可缩短对束流时间的干扰。
英文摘要
In high energy physics experiments $^3$He$^{2+}$ nucleons are suitable to test the internal structure of neutrons, which makes them the perfect substitute. Moreover, it is one of the atomic species for which high polarization values are achievable through the use of optical pumping methods. Therefore, nuclear polarized sources for $^3$He$^{2+}$ ions are currently under development. Consequently, detector systems validating their nuclear polarization value need to be established. Such a detector system, based on the Lamb-shift polarimeter, is introduced in this work. Its advantage is that it can operate at low energies in the range of 10 to 100 keV, which makes pre-acceleration unnecessary. In addition, a fast evaluation of the nuclear polarization within seconds leads to shorter disruptions for beam times. Another option of this Lamb-shift polarimeter might be that it can serve as a valuable tool for further investigation of the bound tritium decay into $^3$He atoms, similar to the hydrogen spin filter for the bound beta decay of the free neutron.
CommentsIn the introduction and the conclusion we mixed up the Q-value of the tritium decay and the kinetic energy of the $^3$He atom after the bound-beta decay. Therefore, we must modify the method how the Lamb-shift polarimeter can be used to measure the nuclear polarization of these atoms
