Neutron phase spin echo

Abstract

A novel neutron spin resonance technique is presented based on the well-know neutron spin echo method. In a first proof-of-principle measurement using a monochromatic neutron beam, it is demonstrated that relative velocity changes of down to a precision of $4\times 10^{-7}$ can be resolved, corresponding to an energy resolution of better than 3~neV. Currently, the sensitivity is only limited by counting statistics and not by systematic effects. An improvement by another two orders of magnitude can be achieved with a dedicated setup, allowing for energy resolutions in the 10~peV regime. The new technique is ideally suited for investigations in the field of precision fundamental neutron physics, but will also be beneficial in scattering applications.

References in corpus (5)

• The neutron and its role in cosmology and particle physics
• Limits on the Axial Coupling Constant of New Light Bosons
• A New Limit on Possible Long-Range Parity-odd Interactions of the Neutron from Neutron Spin Rotation in Liquid ${}^{4}He$
• New Concept for a Neutron Electric Dipole Moment Search using a Pulsed Beam
• Probing Dark Energy models with neutrons

Cited by in corpus (1)

• The Pulsed Neutron Beam EDM Experiment