核磁共振无低温超导磁体快速场沉降方法

IF 1.8 3区化学 Q4 CHEMISTRY, PHYSICAL Solid state nuclear magnetic resonance Pub Date : 2020-10-01 DOI:10.1016/j.ssnmr.2020.101684

Eugeny Kryukov, Yury Bugoslavsky, Angel Joaquin Perez Linde, Thomas Holubar, Stephen Burgess, David Marlow, Jeremy Good

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引用次数: 3

摘要

我们提出了一种快速的算法来激发无冷磁体到一个高度持久的状态。在到达目标场后不到一小时的时间内，衰减率可低至0.021 ppm/h。在接下来的48小时内，衰减率进一步下降到0.0004 ppm/h。该方法可以应用于不同的目标场值，从而可以使用单个磁体研究不同场下的各种核磁共振线。利用振动样品磁强计对超导导线的磁性进行了研究，以了解超导导线形成高稳定磁场的机理。结果证实了超导导线和超导接头的高质量。

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A method for fast field settling in cryogen-free superconducting magnets for NMR

We propose a fast algorithm to energise a cryogen free magnet to a highly persistent state. A decay rate as low as 0.021 ppm/h can be achieved in less than an hour after reaching the target field. The decay rate drops further to 0.0004 ppm/h in the following 48 h. This procedure can be applied at different values of target field, which makes it feasible to use a single magnet for study of various NMR lines at different fields. The mechanism of establishing a highly stable magnetic field can be understood on the basis of the magnetic properties of the superconducting wire, which were studied using a vibrating sample magnetometer. The results confirm the high quality of the superconducting wire and joints.

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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.