一种测量无低温磁共振磁体时间磁场不稳定性的新方法

IF 1.8 3区化学 Q4 CHEMISTRY, PHYSICAL Solid state nuclear magnetic resonance Pub Date : 2021-06-01 DOI:10.1016/j.ssnmr.2021.101732

Eugeny Kryukov, Miroslaw Owczarkowski, David Phillipps, Angel Joaquin Perez Linde, Stephen Burgess, Jeremy Good

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引用次数: 2

摘要

尽管核磁共振无低温磁体具有明显的优势，如液氦供应的独立性和在不同磁场下使用同一磁体的可能性，但由于无低温冷头操作相关的时间磁场畸变，这些磁体的实际应用仍然受到限制。本文介绍了一种简单可靠的检测时间场畸变的实验方法。用这种方法测量磁场的精度比传统的MetroLab特斯拉计高两个数量级。这使我们能够通过将这种场扭曲的幅度降低到亚ppb水平来改进无低温磁体的设计。这就产生了适用于MRI和MAS NMR应用的无低温磁体。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A new method to measure the temporal magnetic field instabilities in cryogen-free magnets for magnetic resonance

Despite the obvious advantages of cryogen-free magnets for NMR such as independence of liquid helium supply and the possibility to use the same magnet at different fields, the practical application of those magnets remains limited because of temporal magnetic field distortions associated with cryogen-free cold head operation. A new experimental method for the simple and reliable detection of the temporal field distortions is described in this paper. The accuracy of the magnetic field measurements by this method is two orders of magnitude higher than by conventional MetroLab Tesla meter. This has enabled us to make improvements in the design of cryogen-free magnets by reducing the amplitude of such field distortions down to sub ppb level. This then results in cryogen-free magnets that are suitable for MRI and MAS NMR applications.

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来源期刊

Solid state nuclear magnetic resonance 物理-光谱学

CiteScore

5.30

自引率

9.40%

发文量

审稿时长

72 days

期刊介绍： The journal Solid State Nuclear Magnetic Resonance publishes original manuscripts of high scientific quality dealing with all experimental and theoretical aspects of solid state NMR. This includes advances in instrumentation, development of new experimental techniques and methodology, new theoretical insights, new data processing and simulation methods, and original applications of established or novel methods to scientific problems.