title: Quantitative radiography of magnetic fields using neutron spin phase imaging.
abstract: We report on a novel neutron radiography technique that uses the Ramsey principle, a method similar to neutron spin echo. For the first time quantitative imaging measurements of magnetic objects and fields could be performed. The strength of the spin-dependent magnetic interaction is detected by a change in the Larmor precession frequency of the neutron spins. Hence, one obtains in addition to the normal attenuation radiography image a so-called neutron spin phase image, which provides a two-dimensional projection of the magnetic field integrated over the neutron flight path.
authors.affiliation: Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland. florian.piegsa@psi.ch
authors.forename: F M
authors.initials: FM
authors.lastname: Piegsa
authors.forename: B
authors.initials: B
authors.lastname: van den Brandt
authors.forename: P
authors.initials: P
authors.lastname: Hautle
authors.forename: J
authors.initials: J
authors.lastname: Kohlbrecher
authors.forename: J A
authors.initials: JA
authors.lastname: Konter