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核磁共振在1946年由珀赛尔(Purcell)和布洛赫(Bloch)两学派同时发现以来,經过十几年的发展,无論在理论上、实验方法上都取得了很大成绩,同时它在物理、化学及工程技术各个方面也得到广泛应用。例如,在物理学上,用以测定核磁矩、核自旋数、磁場强度和稳定磁埸;在化学上,常用以测定有机物及无机物的結构,分析固体或液体样品中的同位素,研究金属中电子的能级和分子中化学鍵的性质,确定反应速率常数和平衡常数以及探討固体中的缺陷、内旋转、自扩散等等,解决了很多其他物理化学方法无能为力的問題,特别是近几年来,各国都集中了相当多的力量做了很多工作和积累了不少材科,因此,它已日益成为物理化学研究中不可缺少的方法。
After more than a decade of discovery by both Purcell and Bloch schools of thought in 1946, NMR has achieved great results both theoretically and experimentally, and at the same time it In physical, chemical and engineering technology has also been widely used. For example, in physics, it is used to determine the nuclear magnetic moment, the number of nuclear spins, the magnetic field strength, and the stability of magnetism. In chemistry, it is commonly used to determine the structure of organic and inorganic substances, analyze isotopes in solid or liquid samples, The energy levels in the electron and the nature of the chemical bonds in the molecule, the determination of reaction rate constants and equilibrium constants, and the investigation of solid defects, internal rotation, self-diffusion, etc., solve many of the other physicochemical methods that are powerless, In recent years, all countries have concentrated a considerable amount of power on a lot of work and accumulated a lot of materials, therefore, it has increasingly become an indispensable method in physicochemical research.