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

• Project/Area Number: 24740141
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: University of Tsukuba
• Principal Investigator: NAGAE Daisuke 筑波大学, 数理物質系, 助教 (60455285)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 磁気双極子モーメント / 符号 / 磁気モーメント / β-NMR / β-NMR法

Research Abstract

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.

Research Products

• [Journal Article] Development of rotating magnetic field system for the β-NMR method (2013)
  • Author(s): D. Nagae, T. Niwa, Y. Ishibashi, Y. Abe, S. Fukuoka, R. Nishikiori, S. Okada, Y. Saito, N. Inaba, A. Ozawa, Y. Aoki
  • Journal Title: Hyperfine Interactions Volume: 220 Issue: 1-3 Pages: 65-69
  • DOI: 10.1007/s10751-012-0721-5
  • Peer Reviewed
• [Presentation] Development of rotating magnetic field system for theβ-NMR method (2012)
  • Author(s): D. Nagae, T. Niwa, Y. Ishibashi, Y. Abe, S. Fukuoka, R. Nishikiori, S. Okada, Y. Saito, N. Inaba, A. Ozawa, Y. Aoki
  • Organizer: The 4^<th> Joint Meeting of the International Symposium on Hyperfine Interactions and the International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2012)
  • Place of Presentation: Beijing, China
• [Presentation] Development of rotating magnetic field system for the β-NMR method (2012)
  • Author(s): D. Nagae, T. Niwa, Y. Ishibashi, Y. Abe, S. Fukuoka, R. Nishikiori, S. Okada, Y. Saito, N. Inaba, A. Ozawa, Y. Aoki
  • Organizer: The 4th Joint Meeting of the International Symposium on Hyperfine Interactions and the International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2012)
  • Place of Presentation: Beijing, China