Neutron phase imaging and tomography.
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.
Pfeiffer
F
F
Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
Grünzweig
C
C
Bunk
O
O
Frei
G
G
Lehmann
E
E
David
C
C