R&D on crystalline cells for 3He nuclear polarizers

• Project/Area Number: 23654107
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: INO Takashi 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 講師 (10301722)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: Ｘ線・粒子線 / 3He偏極 / 偏極中性子 / ヘリウム３偏極 / スピン交換法 / 中性子偏極

Research Abstract

There is unknown temperature-dependent spin relaxation in the 3He polarization by the spin exchange optical pumping (SEOP). Due to this excess spin relaxation, the 3He polarization by the SEOP is limited up to ~80%. The mechanism of this relaxation is not yet revealed, but a study indicates that the source of the excess relaxation is primarily a surface phenomenon. The 3He gas is usually confined in a specially treated clean glass cell, and the unknown spin relaxation might be related with the porous structure of glass, where 3He atoms permeate in the glass walls. To study the mechanism of the temperature-dependent spin relaxation as well as to overcome the limitation of the 3He polarization, research and development of crystalline cells are performed.

Research Products

• [Journal Article] Measurement of polarization of 3He with mobile polarized 3He neutron spin filter (2014)
  • Author(s): T. Ino, G.N. Kim, M.W. Lee, S.M. Lee, J.Y. Kim, S.W. Lee, V.R. Skoy
  • Journal Title: Nucl. Instrum. Methods B Volume: 323 Pages: 87-90
  • DOI: 10.1016/j.nimb.2014.01.018
  • Peer Reviewed
• [Journal Article] Concepts of Neutron Polarisation Analysis Devices for a New Neutron Chopper Spectrometer, POLANO, in J-PARC (2014)
  • Author(s): K. Ohoyama, T. Yokoo, S. Itoh, T. Ino, M. Ohkawara, T. Oku, S. Tasaki, K. Iwasa, T. J. Sato, S. Ishimoto, K. Taketani, H. Kira, Y. Sakaguch, M. Nanbu, H. Hiraka, H. M. Shimizu, M. Takeda, M. Hino, K. Hayashi, M. Kenzelmann, U. Fliges, P. Hautle
  • Journal Title: J. Phys.: Conf. Series Volume: 502 Pages: 1-4
  • DOI: 10.1088/1742-6596/502/1/012051
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Basic Concepts of Polarisation Analysis for Neutron Chopper Spectrometer POLANO at J-PARC (2013)
  • Author(s): K. Ohoyama, T. Yokoo, S. Itoh, J. Suzuki, K. Iwasa, T. J. Sato, H. Kira, Y. Sakaguchi, T. Ino, T. Oku, K. Tomiyasu, M. Matsuura, H. Hiraka, M. Fujita, H. Kimura, T. Sato, J. Suzuki, H. M. Shimizu, T. Arima, M. Takeda, K. Kaneko, M. Hino, S. Muto, H. Nojiri, C. H. Lee, J. G. Park, S. Choi
  • Journal Title: J. Phys. Soc. Jpn. Supplement A Volume: 82 Issue: Suppl.A Pages: SA036-SA036
  • DOI: 10.7566/jpsjs.82sa.sa036
  • Peer Reviewed
• [Journal Article] Precision Magnetic Field Mapping for the ^3He Neutron Spin Filter (2013)
  • Author(s): Takashi Ino, Yasushi Arimoto, Hiroshi Kira, Yoshifumi Sakaguchi, Takenao, Shinohara, Kenji Sakai, Takayuki Oku, Kazuhisa Kakurai, Kenji Ohoyama
  • Journal Title: Physics Procedia Volume: 42 Pages: 183-190
  • DOI: 10.1016/j.phpro.2013.03.193
  • Peer Reviewed
• [Journal Article] A compact spin-exchange optical pumping system for 3 He polarization based on a solenoid coil, a VBG laser diode, and a cosine theta RF coil (2013)
  • Author(s): Sungman LEE, Seung Wook LEE, Takashi INO, Vadim R. SKOY, Manwoo LEE, and Guinyun KIM
  • Journal Title: Journal of the Korean Physics Society Volume: 62 Issue: 3 Pages: 419-423
  • DOI: 10.3938/jkps.62.419
  • Peer Reviewed
• [Journal Article] Precision magnetic field mapping for the 3He neutron spin filter (2013)
  • Author(s): Takashi Ino, Yasushi Arimoto, Hiroshi Kira, Yoshifumi Sakaguchi, Takenao Shinohara, Kenji Sakai, Takayuki Oku, Kazuhisa Kakurai, Kenji Ohoyama
  • Journal Title: Physics Procedia Volume: 42 Pages: 183-190
  • Peer Reviewed
• [Journal Article] A compact SEOP ^3He neutron spin filter with AFP NMR (2012)
  • Author(s): Takashi Ino, Yasushi Arimoto, Hirohiko M. Shimizu, Yoshifumi Sakaguchi, Kenji Sakai, Hiroshi Kira, Takenao Shinohara, Takayuki Oku, Jun-ichi Suzuki, Kazuhisa Kakurai and Lieh-Jeng Chang
  • Journal Title: J. Phys. : Conf. Ser Volume: 340 Pages: 12006-12006
  • DOI: 10.1088/1742-6596/340/1/012006
  • Peer Reviewed
• [Presentation] Polarized ^3He neutron spin filter - development and application (2013)
  • Author(s): Takashi Ino
  • Organizer: The 12th Korea-Japan Meeting on Neutron Science
  • Place of Presentation: University of the Ryukyus, Okinawa, Japan
  • Invited
• [Presentation] 韓国研究用原子炉 HANAROに於ける3^He中性子スピンフィルターの開発 (2012)
  • Author(s): 猪野 隆
  • Organizer: 日本物理学会
  • Place of Presentation: 関西大学
  • Year and Date: 2012-03-25
• [Presentation] Precision magnetic field mapping for the 3^He neutron spin filter (2012)
  • Author(s): Takashi Ino
  • Organizer: PNCMI 2012, the 9th International workshop on Polarised Neutrons in Condensed Matter Investigations
  • Place of Presentation: Paris, France
• [Presentation] Precision magnetic field mapping for the 3He neutron spin filter (2012)
  • Author(s): Takashi Ino, Yasushi Arimoto, Hiroshi Kira, Yoshifumi Sakaguchi, Takenao Shinohara, Kenji Sakai, Takayuki Oku, Kazuhisa Kakurai, Kenji Ohoyama
  • Organizer: PNCMI 2012
  • Place of Presentation: Paris, France
• [Presentation] 韓国研究用原子炉HANAROに於ける 3He中性子スピンフィルターの開発 (2012)
  • Author(s): 猪野 隆
  • Organizer: 日本物理学会
  • Place of Presentation: 関西大学
• [Presentation] 3^He 中性子スピンフィルターによる偏極中性子散乱実験の最適化を考えるその二 (2011)
  • Author(s): 猪野 隆
  • Organizer: 日本物理学会
  • Place of Presentation: 富山大学
  • Year and Date: 2011-09-22
• [Presentation] A compact SEOP 3^He neutron spin filter with AFP NMR (2011)
  • Author(s): Takashi Ino
  • Organizer: ECNS 2011, the 5th European Conference on Neutron Scattering
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2011-07-20
• [Presentation] A compact SEOP 3He neutron spin filter with AFP NMR (2011)
  • Author(s): Takashi Ino
  • Organizer: ECNS2011 - European conference on neutron scattering 2011
  • Place of Presentation: Prague, Czech Republic
• [Presentation] 3He中性子スピンフィルターによる 偏極中性子散乱実験の最適化を考える その二 (2011)
  • Author(s): 猪野 隆
  • Organizer: 日本物理学会
  • Place of Presentation: 富山大学
• [Remarks]
  • URL: http://nop.kek.jp/Zope2/Home/hgdjyv/m4kf4c