静态磁场标准核磁共振信号分析

IF 0.8 4区工程技术 Q4 INSTRUMENTS & INSTRUMENTATION

Measurement Science Review Pub Date : 2022-03-12 DOI:10.2478/msr-2022-0010

P. Andris, T. Dermek, D. Gogola, J. Pribil, I. Frollo

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引用次数: 1

摘要

摘要本文介绍了核磁共振（NMR）稳定器信号的分析。标准的磁场是用电磁铁产生的。借助于具有NMR探针的稳定剂实现了足够高的磁场稳定性。核磁共振现象可以非常精确地测量静态磁场，但由此产生的稳定性也取决于支持的电子设备。已经进行了分析，并估计了测量量的公差。计算出的公差表明了材料所需的特性。首先，探针激发水样中的FID（自由感应衰变）信号，并获取信号答案。对其进行傅立叶变换，并对其频谱进行了研究。实际磁场对应于最强的频率样本。它用于磁场强度的校正和稳定，文中给出了许多计算公式。

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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Analysis of NMR Signal for Static Magnetic Field Standard

Abstract This article describes the analysis of the NMR (Nuclear Magnetic Resonance) stabilizer signal. Magnetic field of the standard is created using an electromagnet. Sufficiently high stability of the magnetic field is achieved with the help of a stabilizer with an NMR probe. The NMR phenomenon makes possible very accurate measurements of the static magnetic field, but the resulting stability depends also on supporting electronics. An analysis has been done and tolerances of the measured quantities have been estimated. The calculated tolerances indicate the needed features of the material. First the probe excites the FID (Free Induction Decay) signal in the water sample and acquires the signal answer. It is Fourier transformed and its spectrum is investigated. The actual magnetic field corresponds to the strongest frequency sample. It is utilized for the magnetic field strength correction and stabilization of it. The article brings many equations for such calculation.

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来源期刊

Measurement Science Review INSTRUMENTS & INSTRUMENTATION-

CiteScore

2.00

自引率

11.10%

发文量

审稿时长

4.8 months

期刊介绍： - theory of measurement - mathematical processing of measured data - measurement uncertainty minimisation - statistical methods in data evaluation and modelling - measurement as an interdisciplinary activity - measurement science in education - medical imaging methods, image processing - biosignal measurement, processing and analysis - model based biomeasurements - neural networks in biomeasurement - telemeasurement in biomedicine - measurement in nanomedicine - measurement of basic physical quantities - magnetic and electric fields measurements - measurement of geometrical and mechanical quantities - optical measuring methods - electromagnetic compatibility - measurement in material science