Establishment of real-space dynamical analysis by inelastic neutron scattering experiment and its application to condensed matter physics

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K12648
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 80040:Quantum beam science-related
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Nakamura Mitsutaka 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J－PARCセンター, 研究主幹 (00370445)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 実空間ダイナミクス解析 / 中性子非弾性散乱実験

Outline of Final Research Achievements

Inelastic neutron scattering (INS) experiments provide the dynamic structure factors by adding the energy axis to the "reciprocal lattice space". We conducted the research activities to realize an analytical method to obtain useful physical property information by converting the INS data into "real space" (real-space dynamics analysis method).
Specifically, we evaluated the background by the measurement using the standard sample and took measures to reduce it, developed the high-speed T0 chopper to for the purpose of high spatial resolution measurement, modified the inverse Monte Carlo calculation code using the molecular mechanics method. We have succeeded in establishing elemental technologies for the practical use of real-space dynamics analysis method.

Free Research Field

中性子科学

Academic Significance and Societal Importance of the Research Achievements

実空間において局所的な乱れが存在する場合、逆格子空間を通じて局所乱れに起因する構造やダイナミクスを議論することはほぼ不可能である。したがって、本研究計画が目指してきた実空間ダイナミクス解析手法の確立は、局所ダイナミクスが新奇物性の発現のキーとなる先端的研究において不可欠の研究ツールをもたらすものであり、従来にない新たな視点での物性研究を開拓しうる。