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童欣. 极化中子技术[J]. 物理, 2020, 49(11): 765-773. DOI: 10.7693/wl20201105
引用本文: 童欣. 极化中子技术[J]. 物理, 2020, 49(11): 765-773. DOI: 10.7693/wl20201105
TONG Xin. Polarized neutron techniques[J]. PHYSICS, 2020, 49(11): 765-773. DOI: 10.7693/wl20201105
Citation: TONG Xin. Polarized neutron techniques[J]. PHYSICS, 2020, 49(11): 765-773. DOI: 10.7693/wl20201105

极化中子技术

Polarized neutron techniques

  • 摘要: 极化中子技术是利用中子的自旋与样品及磁场的相互作用进行测量的一种技术,是中子散射技术中的重要组成部分。极化中子技术已经成功地应用于磁性、强关联、纳米、自旋电子、高分子和生物等材料中,为前沿材料学研究与工业应用提供了所亟需的探测与表征手段。另外,极化中子也被广泛应用于核物理和粒子物理相关领域的基础测量。文章对极化中子技术的发展进行了简要的介绍,概括了极化中子实验所涉及的理论知识,以及在实验中所使用的主要技术,并在此基础上展示了当前极化中子技术在科研中的应用及其所使用的实验装置。

     

    Abstract: The spin of a polarized neutron interacts with a sample's unpaired electrons as well as the magnetic field, making it an invaluable tool for the study of magnetism and other properties of matter. Polarized neutron technology is a powerful method for characterizing fundamental and industrial materials such as magnetic materials, strong-correlation systems, nanomaterials, spintronic materials, polymers, and biological substances. The neutron spin is also an indispensable tool for fundamental research in nuclear and particle physics. In this article, we present a brief introduction to current polarized neutron techniques, including the theory and experimental methods, as well as major applications in various fields of research.

     

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