Search of atomic EDM with precise control of nuclear spin

寻找精确控制核自旋的原子电火花加工

• 批准号: 20340067
• 负责人: YOSHIMI Akihiro
• 金额: $ 8.65万
• 依托单位: The Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20340067/
• 关键词: 原子核(実験); 原子を利用した基本的対称性; 核スピンメーザー; 電気双極子モーメント; 時間反転対称性の破れ; 超対称性模型; 核スピン偏極; 非線形磁気光学効果; 原子磁力計; 周波数安定度; 標準模型

The origin of CP violation, which was discovered in particle decay and is considered to be one of sources for matter-antimatter asymmetry in universe, is one of important objectives in modern physics. In order to search for atomic EDM violating CP symmetry, the research and development have been conducted for ultra-high precision measurement of nuclear spin precession of 129Xe. The various fluctuations to the spin system have been investigated, high sensitivity magnetometer have been developed, leading to improvement of frequency stability for low-frequency nuclear spin oscillator. The sensitivity of 5×10-28 ecm for atomic EDM of 129Xe has been achieved (with a measurement time of 45,000 s) assuming the electric field strength of 10 kV/cm.

CP破缺的起源是在粒子衰变中发现的，被认为是宇宙物质-反物质不对称性的根源之一，是现代物理学的重要目标之一。为了寻找原子电火花破坏CP对称性的研究。开展了129Xe核自旋进动超高精度测量研究，研究了自旋系统的各种波动，开发了高灵敏度磁力计，提高了低频核自旋的频率稳定性。假设电场强度为 10 kV/cm，129Xe 原子 EDM 的灵敏度已达到 5×10-28 ecm（测量时间为 45,000 秒）。

项目成果

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

Development of NMOR magnetometer for spin-maser EDM experiment

用于自旋脉泽EDM实验的NMOR磁力计的开发

• DOI: 10.1016/j.phpro.2011.06.043
• 发表时间: 2011
• 期刊: Physics Procedia
• 作者: A.Yoshimi;T.Furukawa;K.Asahi;et al.
• 通讯作者: et al.

Development of highly sensitive NMOR magnetometry for an EDM experiment

开发用于 EDM 实验的高灵敏度 NMOR 磁力计

• DOI: 10.1088/1742-6596/312/10/102015
• 发表时间: 2011
• 期刊: J. Phys. Conf. Ser
• 作者: T.Nanao;A.Yoshimi;T.Furukawa;K.Asahi;et al.
• 通讯作者: et al.

Structures of neutron-rich Si, S and P isotopes studied from electromagnetic moments

从电磁矩研究富中子 Si、S 和 P 同位素的结构

• 发表时间: 2010
• 作者: Keisuke Itoh;Hideki Nakaya;Yohei Kawakami;Takeshi Fukatsu;Hirotake Itoh;Takahiko Sasaki;Shingo Saito;Shinichiro Iwai;名和範人;A.Yoshimi
• 通讯作者: A.Yoshimi

Nuclear Spin Maser at Highly Stabilized Low Magnetic Field and Search for Atomic EDM

高稳定低磁场下的核自旋脉泽和原子电火花加工的探索

• 发表时间: 2009
• 期刊: AIP Conf.Proc. 1149
• 作者: A.Yoshimi;K.Asahi;T.Inoue;M.Uchida;N.Hatakeyama;M.Tsuchiya;S.Kagami
• 通讯作者: S.Kagami