Three Dimensional Polarimetric Neutron Tomography of Magnetic Fields

Morten Sales*, Markus Strobl, Takenao Shinohara, Anton Tremsin, Luise Theil Kuhn, William R B Lionheart, Naeem M. Desai, Anders Bjorholm Dahl, Søren Schmidt

*Corresponding author for this work

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Abstract

Through the use of Time-of-Flight Three Dimensional Polarimetric Neutron Tomography (ToF 3DPNT) we have for the first time successfully demonstrated a technique capable of measuring and reconstructing three dimensional magnetic field strengths and directions unobtrusively and non-destructively with the potential to probe the interior of bulk samples which is not amenable otherwise. Using a pioneering polarimetric set-up for ToF neutron instrumentation in combination with a newly developed tailored reconstruction algorithm, the magnetic field generated by a current carrying solenoid has been measured and reconstructed, thereby providing the proof-of-principle of a technique able to reveal hitherto unobtainable information on the magnetic fields in the bulk of materials and devices, due to a high degree of penetration into many materials, including metals, and the sensitivity of neutron polarisation to magnetic fields. The technique puts the potential of the ToF time structure of pulsed neutron sources to full use in order to optimise the recorded information quality and reduce measurement time.
Original languageEnglish
Article number2214
JournalScientific Reports
Volume8
Issue number1
Pages (from-to)1-6
ISSN2045-2322
DOIs
Publication statusPublished - 2018

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