Design and Experimental Implementation of a Low Frequency Pulsed Magnetic Field Generator
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2017-05-12
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IEEE
Abstract
Pulsed magnetic field generation is a critical aspect of all nuclear magnetic resonance (NMR) experiments. In this paper, a novel design for a low field, low frequency (less than 5 MHz), pulsed magnetic field generation circuit suited for unilateral NMR applications is presented. A pulsed sinusoidal current is generated at an inductive load connected to an FET-based switch. The inductive load resonates at a frequency of approximately 2 MHz, which is also the precession frequency of 1 H protons in an external magnetic flux density of 500 G. The designed circuit can be tuned to operate at resonant frequencies of other chemical species as well. In this paper, the design parameters and operation of the prototype pulsed field generator will be discussed.
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This article is published as Gaunkar, Neelam Prabhu, Jayaprakash Selvaraj, Leif Bauer, Mani Mina, Robert Weber, and David Jiles. "Design and experimental implementation of a low frequency pulsed magnetic field generator." IEEE Transactions on Magnetics 53, no. 11 (2017): 1-4.
DOI: 10.1109/TMAG.2017.2704081.
Copyright 2017 The Authors.
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