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A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials

In this article, a static-sample magnetometer is presented to measure the relative permeability of weakly magnetic materials. The method consists of scanning the magnetic field inside a dipole magnet by using an NMR teslameter to measure the perturbation of a test specimen on the externally applied...

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Detalles Bibliográficos
Autores principales: Arpaia, Pasquale, Buzio, Marco, Parrella, Alessandro, Pentella, Mariano, Ramos, Pedro M
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:https://dx.doi.org/10.1109/tim.2020.3041823
http://cds.cern.ch/record/2808734
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author Arpaia, Pasquale
Buzio, Marco
Parrella, Alessandro
Pentella, Mariano
Ramos, Pedro M
author_facet Arpaia, Pasquale
Buzio, Marco
Parrella, Alessandro
Pentella, Mariano
Ramos, Pedro M
author_sort Arpaia, Pasquale
collection CERN
description In this article, a static-sample magnetometer is presented to measure the relative permeability of weakly magnetic materials. The method consists of scanning the magnetic field inside a dipole magnet by using an NMR teslameter to measure the perturbation of a test specimen on the externally applied field. Then, an inverse problem is used to compute the specimen’s relative permeability. As a case study, the measurement of three different materials with different shapes and dimensions is carried out. The method was validated by measuring the same material by vibrating sample magnetometry as proposed by the standard ASTM A342/A342M-14. The expanded measurement uncertainty of the relative permeability, evaluated by Monte Carlo simulations, is about $10^{-4}$ for all the cases, with a level of confidence of 95%.
id cern-2808734
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-28087342022-05-06T21:17:38Zdoi:10.1109/tim.2020.3041823http://cds.cern.ch/record/2808734engArpaia, PasqualeBuzio, MarcoParrella, AlessandroPentella, MarianoRamos, Pedro MA Static-Sample Magnetometer for Characterizing Weak Magnetic MaterialsDetectors and Experimental TechniquesIn this article, a static-sample magnetometer is presented to measure the relative permeability of weakly magnetic materials. The method consists of scanning the magnetic field inside a dipole magnet by using an NMR teslameter to measure the perturbation of a test specimen on the externally applied field. Then, an inverse problem is used to compute the specimen’s relative permeability. As a case study, the measurement of three different materials with different shapes and dimensions is carried out. The method was validated by measuring the same material by vibrating sample magnetometry as proposed by the standard ASTM A342/A342M-14. The expanded measurement uncertainty of the relative permeability, evaluated by Monte Carlo simulations, is about $10^{-4}$ for all the cases, with a level of confidence of 95%.oai:cds.cern.ch:28087342021
spellingShingle Detectors and Experimental Techniques
Arpaia, Pasquale
Buzio, Marco
Parrella, Alessandro
Pentella, Mariano
Ramos, Pedro M
A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials
title A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials
title_full A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials
title_fullStr A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials
title_full_unstemmed A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials
title_short A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials
title_sort static-sample magnetometer for characterizing weak magnetic materials
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1109/tim.2020.3041823
http://cds.cern.ch/record/2808734
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