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Three Dimensional Polarimetric Neutron Tomography of Magnetic Fields

Authors :: Søren Schmidt
Takenao Shinohara
Morten Sales
Anders Bjorholm Dahl
Markus Strobl
Anton S. Tremsin
Naeem M. Desai
Luise Theil Kuhn
William R. B. Lionheart
Source :: Sales, M, Strobl, M, Shinohara, T, Tremsin, A, Kuhn, L T, Lionheart, W R B, Desai, N M, Dahl, A B & Schmidt, S 2018, ' Three Dimensional Polarimetric Neutron Tomography of Magnetic Fields ', Scientific Reports, vol. 8, 2214 . https://doi.org/10.1038/s41598-018-20461-7, Sales, M, Strobl, M, Shinohara, T, Tremsin, A, Theil Kuhn, L, Lionheart, W, Desai, N, Dahl, A B & Schmidt, S 2018, ' Three Dimensional Polarimetric Neutron Tomography of Magnetic Fields ', Scientific Reports . https://doi.org/10.1038/s41598-018-20461-7, Scientific Reports, Vol 8, Iss 1, Pp 1-6 (2018), Scientific Reports, Sales, M, Strobl, M, Shinohara, T, Tremsin, A, Kuhn, L T, Lionheart, W R B, Desai, N M, Dahl, A B & Schmidt, S 2018, ' Three Dimensional Polarimetric Neutron Tomography of Magnetic Fields ', Scientific Reports, vol. 8, no. 1, 2214, pp. 1-6 . https://doi.org/10.1038/s41598-018-20461-7
Publication Year :: 2018
Publisher :: Springer Science and Business Media LLC, 2018.
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.<br />Comment: 12 pages, 4 figures