Development of rotating magnetic field system for the beta-NMR method

用于β-NMR方法的旋转磁场系统的开发

• 批准号: 24740141
• 负责人: NAGAE Daisuke
• 金额: $ 2.83万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24740141/
• 关键词: 磁気双極子モーメント; 符号; 磁気モーメント; β-NMR; β-NMR法

A rotating magnetic field system has been developed to determine the sign of magnetic moment by means of the beta-ray-detected nuclear magnetic resonance method. The rotating magnetic field is obtained using two crossed Helmholtz-like coils at right angles. The phase angles of the alternating currents for the two coils are shifted by 90 degree. Thus the resulting magnetic field is circularly polarized. By the adjustment of the phase-angle difference, a right- or left-circularly polarized magnetic field is produced. Productions of right-or left-rotating magnetic fields including a linear component were confirmed using pickup-coils.A performance of the system was studied with spin-polarized 20F nuclei at the Research Center for Nuclear Physics, Osaka University. The obtained sign of magnetic monet for 20F is positive and in agreement with the reported one.

开发了旋转磁场系统，通过β射线检测核磁共振方法来确定磁矩的符号。使用两个成直角交叉的亥姆霍兹类线圈获得旋转磁场。两个线圈的交流电的相位角偏移90度。因此产生的磁场是圆极化的。通过调整相位角差，产生右旋或左旋圆极化磁场。使用拾波线圈确认了包括线性分量的右旋或左旋磁场的产生。大阪大学核物理研究中心利用自旋极化 20F 核对该系统的性能进行了研究。获得的 20F 磁莫奈符号为正，与报道的一致。

项目成果

Development of rotating magnetic field system for the β-NMR method

β-NMR 法旋转磁场系统的开发

• DOI: 10.1007/s10751-012-0721-5
• 发表时间: 2013
• 期刊: Hyperfine Interactions
• 作者: D. Nagae;T. Niwa;Y. Ishibashi;Y. Abe;S. Fukuoka;R. Nishikiori;S. Okada;Y. Saito;N. Inaba;A. Ozawa;Y. Aoki
• 通讯作者: Y. Aoki