Development of a production method for neutron beams carrying orbital angular momentum

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K13411
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Saitama Institute of Technology
• Principal Investigator: UCHIDA MASAYA 埼玉工業大学, 付置研究所, 教授 (80462662)
• Co-Investigator(Kenkyū-buntansha): 酒井 卓郎 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 物質科学研究センター, 研究主幹 (70370400)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 中性子ビーム / 量子ビーム / 軌道角運動量 / 位相特異点 / プロトンビーム / 微細加工

Outline of Final Research Achievements

The final target of this study at the start was, hitherto unreported, the generation of neutron beams carrying orbital angular momentum (OAM) by controlling the phase of wavefunctions. Towards this goal, in this study we proposed some neutron optical elements such as forked diffraction gratings and polygonal slits. A prototype micrometer-sized forked diffraction grating has been designed with wave simulations and implemented using proton microbeams. The present results represent a first step toward neutron beams with OAM.

Free Research Field

ビーム物理、超微細加工