Improvements of multilayer neutron interferometer and it's applications to quantum mechanical measurement problems.

多层中子干涉仪的改进及其在量子力学测量问题中的应用。

• 批准号: 03640349
• 负责人: EBISAWA Toru
• 金额: $ 0.9万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03640349/
• 关键词: Interferometer; Multilayer mirror; Neutron mirror; Cold neutron; Magnetic mirror; Quantum measurement problem; 中性子干渉計; 多層膜中性子鏡; 中性子磁気ミラー; 量子力学的観測問題; 冷中性子; 多層中性子ミラ-; 磁気多層中性子ミラ-; 偏柮中性子

1. The goal of the research project has been the improvements of the multilayer neutron interferometer and it's applications to physics. Concludingly, the goal will be attained with about one year delay due to taking long time to improve the interferometer.2. In order to improve the interferometer, it is considerably important to realize the position control of the interferometer mirrors with high precision and the high perfectness of multilayer mirror as one dimensional lattice crystal.3. The position control of the former has been attained with a very high precision of about 10 A by combining piezo actuators with flat base plate, laser interferometer and high precision linear scale.4. In the case of the latter the improvement of the flatness of the mirror substrate has been attained beyond the limit of the conventional polishing technique. The perfectness of the multilayer mirror as one dimensional lattice has been checked with a high angle precision by the double diffraction method using two silicon perfect crystals.5. Performance tests of the improved interferometer will be made the beginning of the next year. Fabrication of magnetic mirror for the interferometer and it's application to quantum mechanical measurement theory will be made the end of the next year.

1.本课题的研究目标是改进多层膜中子干涉仪及其在物理学中的应用。总而言之，由于干涉仪的改进需要很长的时间，因此目标的实现将推迟一年左右。为了提高干涉仪的性能，实现高精度的干涉仪反射镜位置控制和作为一维点阵晶体的多层膜反射镜的高完整性是非常重要的.通过将压电陶瓷驱动器与平板、激光干涉仪和高精度线性标尺相结合，实现了对前级的位置控制，其精度可达10 A左右.在后者的情况下，已经获得了超出常规抛光技术的限制的镜基板的平坦度的改善。采用双衍射方法，利用两块硅晶体，对多层膜反射镜的一维点阵完整性进行了高角度精度的检验.明年初将对改进后的干涉仪进行性能测试。明年年底将完成干涉仪磁镜的制作及其在量子力学测量理论中的应用。