Yuan-Yu Jau, Daniel S. Hussey, Thomas R. Gentile, and Wangchun Chen Phys. Rev. Lett. 125, 110801 – Published 10 September 2020
See the paper at APS Physical Review Letters.
Read more at Mirage News.
Neutrons (blue), which can penetrate solid objects (like a gray steel wall), have no electric charge. However, the magnetic spins of moving neutrons are affected by an electric field (green), experiencing a slight tweak to their spin direction as they pass through the field. This spin direction change (red angle) can be measured by polarimetry (using a neutron spin filter and solenoid, represented by the coil), offering a potential method for inspecting electrical devices that cannot be observed directly.