Journal cover Journal topic
Journal of Sensors and Sensor Systems An open-access peer-reviewed journal
J. Sens. Sens. Syst., 7, 227-234, 2018
https://doi.org/10.5194/jsss-7-227-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Regular research article
04 Apr 2018
Homogenous static magnetic field coils dedicated to portable nuclear magnetic resonance for agronomic studies
Rahima Sidi-Boulenouar1,2, Ariston Reis1, Eric Nativel3, Simon Buy1,4, Pauline de Pellegars5, Pan Liu1, Michel Zanca1,6, Christophe Goze-Bac1, Jérome Barbat1, Eric Alibert1, Jean-Luc Verdeil2, Frédéric Gatineau2, Nadia Bertin4, Atma Anand7, and Christophe Coillot1 1Laboratoire Charles Coulomb (L2C-UMR5221), BioNanoNMRI group, CNRS, University of Montpellier, Place Eugene Bataillon, Montpellier, France
2Centre de Cooperation Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR AGAP, Montpellier, France
3Institut d'Electronique et des Systèmes (IES-UMR5214), CNRS, University of Montpellier, Campus Saint-Priest, Montpellier, France
4Institut National de la Recherche Agronomique (INRA), PSH (UR 1115), Avignon, France
5SATT AxLR, Montpellier, France
6Nuclear medicine, CMC Gui de Chauliac, University Hospital Montpellier, Montpellier, France
7Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerala, India
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.
Citation: Sidi-Boulenouar, R., Reis, A., Nativel, E., Buy, S., de Pellegars, P., Liu, P., Zanca, M., Goze-Bac, C., Barbat, J., Alibert, E., Verdeil, J.-L., Gatineau, F., Bertin, N., Anand, A., and Coillot, C.: Homogenous static magnetic field coils dedicated to portable nuclear magnetic resonance for agronomic studies, J. Sens. Sens. Syst., 7, 227-234, https://doi.org/10.5194/jsss-7-227-2018, 2018.

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