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Short, powerful, and agile current drivers for magnetic resonance

Short, powerful, and agile current drivers for magnetic resonance A system for the generation of short, powerful, and agile pulses of current drive is described. The system is made of several submodules, most of them “home‐made” and is capable of producing current pulses ranging from 9 A for 150 ns pulses to 94 A for 1400 ns pulse duration, when connected to a nominal 0.6 Ω/2.75 μH coil. The amplitude of successive current pulses can be updated in the ∼μs time scale. Such capabilities are very useful in the field of electron spin resonance microimaging and for the measurements of diffusion by electron spin resonance. A variant of the system can also be used for the nuclear magnetic resonance imaging of samples located in grossly inhomogeneous magnetic field or for solid‐state nuclear magnetic resonance imaging. Details of the system electronic design as well as some representative experimental results are provided. © 2011 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 39B: 119–127, 2011 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Concepts in Magnetic Resonance Wiley

Short, powerful, and agile current drivers for magnetic resonance

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References (22)

Publisher
Wiley
Copyright
Copyright © 2011 Wiley Periodicals, Inc.
ISSN
1546-6086
eISSN
1552-5023
DOI
10.1002/cmr.b.20199
Publisher site
See Article on Publisher Site

Abstract

A system for the generation of short, powerful, and agile pulses of current drive is described. The system is made of several submodules, most of them “home‐made” and is capable of producing current pulses ranging from 9 A for 150 ns pulses to 94 A for 1400 ns pulse duration, when connected to a nominal 0.6 Ω/2.75 μH coil. The amplitude of successive current pulses can be updated in the ∼μs time scale. Such capabilities are very useful in the field of electron spin resonance microimaging and for the measurements of diffusion by electron spin resonance. A variant of the system can also be used for the nuclear magnetic resonance imaging of samples located in grossly inhomogeneous magnetic field or for solid‐state nuclear magnetic resonance imaging. Details of the system electronic design as well as some representative experimental results are provided. © 2011 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 39B: 119–127, 2011

Journal

Concepts in Magnetic ResonanceWiley

Published: Aug 1, 2011

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