Highly-efficient spin contrast variation technique for precise structural analysis of multi-filler-rubber composites

• Project/Area Number: 25706033
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: NODA Yohei 独立行政法人日本原子力研究開発機構, 原子力科学研究部門量子ビーム応用研究センター, 任期付研究員 (50455284)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000); Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2013: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
• Keywords: 二酸化炭素排出削減 / 低燃費タイヤゴム / 中性子小角散乱 / 核スピン偏極 / コントラスト変調 / コントラスト変調法 / フィラー充填ゴム

Outline of Final Research Achievements

For precise structural analysis of particle-filled rubber materials, we have upgraded our instrument of spin contrast variation technique. We have achieved higher proton spin polarization, in turn wider contrast variation, by introducing a high-power microwave source, which stimulates polarization transfer from electron spins to proton spins. The effectiveness of this technique was demonstrated by an experiment at BL15 TAIKAN in J-PARC for rubber materials filled with carbon and silica particles.

Research Products

• [Presentation] The first experiment of spin contrast variation SANS at J-PARC BL15 TAIKAN (2015)
  • Author(s): 能田洋平、山口大輔、社本真一、橋本竹治、熊田隆之、高田慎一、小泉智、大石一城、鈴木淳市、増井友美、間下亮、岸本浩通
  • Organizer: The 14th Korea-Japan Meeting on Neutron Science
  • Place of Presentation: いばらき量子ビーム研究センター（東海村）
  • Year and Date: 2015-01-07 – 2015-01-09
• [Presentation] 水素核スピン偏極コントラスト変調SANSの高度化とJ-PARCへの展開 (2014)
  • Author(s): 能田洋平、山口大輔、社本真一、橋本竹治、熊田隆之、高田慎一、小泉智、大石一城、鈴木淳市、増井友美、間下亮、岸本浩通
  • Organizer: 日本中性子科学会第14回年会
  • Place of Presentation: かでる２．７（札幌市）
  • Year and Date: 2014-12-11 – 2014-12-12
• [Presentation] Recent upgrade of dynamic nuclear polarization system in JAEA (2014)
  • Author(s): 能田洋平
  • Organizer: Polarized Neutrons for Condensed Matter Investigations 2014
  • Place of Presentation: シドニー大学（オーストラリア）
  • Year and Date: 2014-09-15 – 2014-09-19
• [Presentation] コントラスト変調SANSのための核スピン偏極装置最適化 (2013)
  • Author(s): 能田洋平
  • Organizer: 日本中性子科学会第１３回年会
  • Place of Presentation: さわやかちば県民プラザ