Homogenous static magnetic field coils dedicated to portable nuclear magnetic resonance for agronomic studies
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Published:2018-04-04
Issue:1
Volume:7
Page:227-234
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ISSN:2194-878X
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Container-title:Journal of Sensors and Sensor Systems
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language:en
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Short-container-title:J. Sens. Sens. Syst.
Author:
Sidi-Boulenouar Rahima, Reis Ariston, Nativel Eric, Buy Simon, de Pellegars Pauline, Liu Pan, Zanca Michel, Goze-Bac ChristopheORCID, Barbat Jérome, Alibert Eric, Verdeil Jean-Luc, Gatineau Frédéric, Bertin Nadia, Anand Atma, Coillot Christophe
Abstract
Abstract. Nuclear magnetic resonance (NMR) experiments are usually carried
out at very high and homogenous magnetic fields. However, portable systems
have emerged in recent years at low fields, offering many advantages like
easier maintenance and open design that permit us to imagine a variety of
coil configurations in order to maximize the homogeneity of the static field
B0 and the radio-frequency field B1. The wire winding distribution
based on space harmonics suppression (SHS) of the cosine current density
distribution offers new possibilities of producing homogenous static fields
B0. In this work, an extension of the SHS method, allowing homogeneity
enhancement and flexibility of the coil design, is presented. The efficiency
of the method is demonstrated through the construction of homogenous magnetic
field coils dedicated to a very low magnetic field (8 mT) 1H NMR
spectrometer. The performance of these coils in terms of magnetic field
intensity and homogeneity as well as self-heating behavior is compliant with
in planta experiments for agronomic studies.
Publisher
Copernicus GmbH
Subject
Electrical and Electronic Engineering,Instrumentation
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