摘要
中子作为一种具有独特性质的亚原子粒子,在很多研究领域都具有重要且无法替代的优势.中子三轴谱仪通过能量守恒和动量守恒原理就可以测量某一系统的弹性或非弹性散射性质,从而获得该系统的结构或动力学信息.中子三轴谱仪得名于其3个核心部分:单色器、样品和分析器,每一部分都可以独立转动.由于三轴谱仪在物理学尤其是凝聚态物理学研究中所发挥的重要作用,中国科学院物理研究所将联合中国原子能科学研究院,在后者新建成的中国先进研究堆搭建一台现代化的热中子三轴谱仪.文章结合该谱仪,介绍了中子三轴谱仪的基本原理、技术以及应用范围.
As a subatomic particle, the neutron has unique properties which allow it to play an important and irreplaceable role in many research fields. Based on the principle of momentum and energy conservation, a neutron triple-axis spectrometer （TAS） can measure the elastic and inelastic scattering of a system to obtain structural and dynamical information. The TAS was given its name for its three major parts： the monochromator, sample holder, and analyzer, each of which can rotate independently. Because of the important role that the TAS plays in physics, especially in condensed matter physics, the Institute of Physics of the Chinese Academy of Sciences has decided to collaborate with the China Institute of Atomic Energy to build a modern TAS in the newly-built Chinese Research Reactor. This paper will describe the principle, technology and applications of the TAS.
出处
《物理》
CAS
北大核心
2011年第1期33-39,共7页
Physics
关键词
中子散射
三轴谱仪
neutron scattering, triple-axis spectrometer
作者简介
通讯联系人．Email：slli@aphy．iphy．ac．cn
通讯联系人．Email：daip@ornl．gov
