Application of nuclear spin maser of a new scheme to the experimental study of atomic electric dipole moment

新方案核自旋微波激射器在原子电偶极矩实验研究中的应用

• 批准号: 21244029
• 负责人: ASAHI Koichiro
• 金额: $ 28.37万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21244029/
• 关键词: 原子核実験; 核スピンメーザー; 精密周波数計測; 原子EDM; CP非保存; 実験核物理; 素粒子実験; 超精密計測; 電気双極子モーメント; メーザー; 光ポンピング

In order to pursue a high sensitivity detection of the CP-violating permanent electric dipole moment (EDM) of 129Xe atom, a nuclear spin maser of new scheme which runs on the basis of optical spin detection and external feedback mechanism was constructed. Detailed investigations and improvements of its signal performance and frequency stability were carried out, yielding a frequency precision of 7.9 nHz for a one shot measurement of 30,000 s duration. Furthermore, 3He were added as a reference spin system to the 129Xe masing substance, and the technique to polarize, preserve and detect the two spin species simultaneously was developed. As a result, the simultaneous operations of the 129Xe-3He two species nuclear spin maser, which allows the precision removal of spurious EDM signals arising from drifts in the magnetic field, was realized, and thus the instrumental and technical basis for executing the projected high-precision EDM detection in 129Xe was established.

为了实现对129Xe原子违反CP的永久电偶极矩(EDM)的高灵敏度探测，构建了一种基于光学自旋探测和外反馈机制的核自旋脉泽新方案。对其信号性能和频率稳定度进行了详细的研究和改进，在单次测量30,000 S持续时间的情况下，频率精度为7.9nHz。此外，还将~3He作为参考自旋体系加入到~(129)Xe磁化物质中，发展了同时极化、保存和检测这两个自旋物种的技术。实现了129Xe-3He两种核自旋激射器的同步工作，实现了对磁场漂移产生的杂散电火花信号的精确去除，为实现129Xe的高精度电火花加工检测奠定了仪器和技术基础。

项目成果

Control of stopping position of radioactive ion beam in superfluid helium for laser spectroscopy experiments

激光光谱实验中超流氦中放射性离子束停止位置的控制

• DOI: 10.1016/j.nimb.2013.07.068
• 发表时间: 2013
• 期刊: Nuclear Instruments and Methods in Physics Researches Section B
• 作者: X. F. Yang;T. Furukawa;T. Wakui;K. Imamura;H. Tetsuka;T. Fujita;Y. Yamaguchi;Y. Tsutsui;Y. Mitsuya;Y. Ichikawa;Y. Ishibashi;N. Yoshida;H. Shirai;Y. Ebata;M. Hayasaka;S. Arai;S. Muramoto;A. Hatakeyama;M. Wada;T. Sonoda;Y. Ito;T. Kobaya
• 通讯作者: T. Kobaya

Ground-state electric quadrupole moment of ^<31>Al

^<31>Al的基态电四极矩

• 发表时间: 2009
• 期刊: Phys.Rev.C 79
• 作者: D.Nagae;H.Ueno;et al.
• 通讯作者: et al.

Search for electric dipole moment of Xe^^129 using active nuclear spin maser

使用主动核自旋微波激射器搜索 Xe^^129 的电偶极矩

• 发表时间: 2014
• 作者: Y. Ichikawa;T. Furukawa;H. Ueno;K. Asahi et al
• 通讯作者: K. Asahi et al

Search for Electric Dipole Moment in ^<129>Xe Atom Using a Nuclear Spin Oscillator

使用核自旋振荡器搜索 ^<129>Xe 原子中的电偶极矩

• DOI: 10.1134/s1063779614010080
• 发表时间: 2014
• 期刊: Physics of Particles and Nuclei
• 影响因子: 0.4
• 作者: K. Asahi;Y. Ichikawa;M. Chikamori;Y. Ohtomo;E. Hikota;T. Suzuki;T. Inoue;T. Furukawa;A. Yoshimi;K. Suzuki;T. Nanao;H. Miyatake;M. Tsuchiya;N. Yoshida;H. Shirai;T. Ino;H. Ueno;Y. Matsuo and T. Fukuyama
• 通讯作者: Y. Matsuo and T. Fukuyama

^<129>Xe原子EDM測定に向けた核スピンメーザー開発の現状

^<129>用于 Xe 原子 EDM 测量的核自旋微波激射器开发现状

• 发表时间: 2010
• 作者: 井上壮志;古川武;林宏憲;土屋真人;七尾翼;吉見彰洋;内田誠;旭耕一郎;松尾由賀利
• 通讯作者: 松尾由賀利