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Article Dans Une Revue Journal of Sensors and Sensor Systems Année : 2018

Homogenous static magnetic field coils dedicated to portable nuclear magnetic resonance for agronomic studies

Pan Liu
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Michel Zanca
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Christophe Goze-Bac
Atma Anand
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Résumé

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 B-0 and the radio-frequency field B-1. The wire winding distribution based on space harmonics suppression (SHS) of the cosine current density distribution offers new possibilities of producing homogenous static fields B-0. 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) H-1 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.

Domaines

Electronique
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Dates et versions

hal-01762923 , version 1 (26-05-2020)

Identifiants

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Rahima Sidi Boulenouar, Ariston Reis, Eric Nativel, Simon Buy, Pauline de Pellegars, et al.. Homogenous static magnetic field coils dedicated to portable nuclear magnetic resonance for agronomic studies. Journal of Sensors and Sensor Systems, 2018, 7 (1), pp.227 - 234. ⟨10.5194/jsss-7-227-2018⟩. ⟨hal-01762923⟩
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