Preparation and Applications of Neutron Storage Bottle with Ultrafine Polished Metal Mirrors

超细抛光金属镜中子储存瓶的制备及应用

基本信息

批准号：
08558048
负责人：
UTSURO Masahiko
金额：
$ 1.66万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

1.An ultracold neutron storage bottle was designed with optimization for the studies on physical propeties of neutron beta decay. A decay particle spectrometer was developed and the characteristics were clarified. These results were published in J.Phys.Soc.Japan, Suppl.A.2.In order to prepare the best storage bottle for neutron decay experiments, the highest technologies of metal surface treatments were studied on thediamond surface working and the electro-chemical surface polishing.3.As the results, the diamond surface working remains surface structure of working patters and not applicable to hard materials such as stainless steel, while the electro-chemical surface polishing is applicable to ultra-high precision polishing on a large surface area of hard materials. These developments were reported in KURRI Progress Report 1996 and the Scientific Meeting in the Research Reactor Institute.4.A new important approach was developed on the theoretical expression of the total reflection of bottle mirrors, and the approach was reported in KURRI-KR-14(1997).5.According to these research developments, high quality stainless steel mirrors were prepared by the electro-chemical ultra-high treatments. The meaured results of the reflectivity studies gave informations on the best combination of the electic and chemical polishing processe. The results of these studies were reported on a publication "Hamon" 7(1997).6.Based on the results of these studies, numerical analyzes on the neutron storage properties of decay bottles were carried out, and a cylindrical shape, tangential injection, 50 cm diameter and 60 cm lenght stainless steel bottle was prepared. The developments of these bottle arrangements were presented in the Workshop JHP'98 held at KEK,Tsukuba.7.The bottle prepared was connected to KUR supermirror neutron turbine facility for the experiments of bottle characteristics studies and further applications to neutron physics experiments.

1.针对中子β衰变物理性质的研究，优化设计了超冷中子储存瓶。开发了衰变粒子光谱仪并阐明了其特性。这些成果发表在J.Phys.Soc.Japan, Suppl.A.2上。为了制备用于中子衰变实验的最佳储存瓶，在金刚石表面加工和电化学方面研究了金属表面处理的最高技术。 3.结果表明，金刚石表面加工保留了加工图案的表面结构，不适用于不锈钢等硬质材料，而电化学表面抛光适用于大表面积的超高精度抛光的硬质材料。这些进展在KURRI Progress Report 1996和研究堆研究所的科学会议上进行了报道。4.在瓶镜全反射的理论表达上提出了一种新的重要方法，该方法在KURRI-KR-14中进行了报道(1997).5.根据这些研究进展，通过电化学超高处理制备了高质量的不锈钢镜。反射率研究的测量结果提供了有关电抛光和化学抛光工艺的最佳组合的信息。这些研究的结果发表在出版物“Hamon”7(1997)上。 6.根据这些研究的结果，对衰变瓶的中子储存特性进行了数值分析，并提出了圆柱形、切向注入、准备直径50cm、长度60cm的不锈钢瓶。这些瓶子排列的发展在筑波 KEK 举行的 JHP'98 研讨会上进行了介绍。7。所制备的瓶子连接到 KUR 超镜中子涡轮设施，用于瓶子特性研究的实验和进一步应用于中子物理实验。