Polarization measurements in neutron imaging

Strobl, M.*; Heimonen, H.*; Schmidt, S.*; Sales, M.*; Kardjilov, N.*; Hilger, A.*; Manke, I.*; 篠原 武尚   ; Valsecchi, J.*

Strobl, M.*; Heimonen, H.*; Schmidt, S.*; Sales, M.*; Kardjilov, N.*; Hilger, A.*; Manke, I.*; Shinohara, Takenao; Valsecchi, J.*

While neutron imaging is a well established technique for investigations of inner structures and processes in materials, complex systems, and devices, the utilization of polarized neutron beams to visualize magnetic phenomena has been introduced only about a decade ago. In contrast to neutron scattering studies, where the interaction of the neutron's magnetic moment with magnetic states of matter has been exploited for a long time, the direct visualization of magnetic fields in neutron imaging is a relatively new field and is still developing. Here, we give an overview of the status and provide approaches to visualizing magnetic fields with polarized neutrons, together with a report on the latest developments in attempting to record neutron tomographies for 3D reconstructions of magnetic vector fields.