title: Neutron phase imaging and tomography.
abstract: We report how a setup consisting of three gratings yields quantitative two- and three-dimensional images depicting the quantum-mechanical phase shifts of neutron de Broglie wave packets induced by the influence of macroscopic objects. Since our approach requires only a little spatial and chromatic coherence it provides a more than 2 orders of magnitude higher efficiency than existing techniques. This dramatically reduces the required measurement time for computed phase tomography and opens up the way for three-dimensional investigations of previously inaccessible quantum-mechanical phase interactions of neutrons with matter.
authors.affiliation: Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
authors.forename: F
authors.initials: F
authors.lastname: Pfeiffer
authors.forename: C
authors.initials: C
authors.lastname: Grünzweig
authors.forename: O
authors.initials: O
authors.lastname: Bunk
authors.forename: G
authors.initials: G
authors.lastname: Frei
authors.forename: E
authors.initials: E
authors.lastname: Lehmann
authors.forename: C
authors.initials: C
authors.lastname: David