  The velocity of neutrons from a pulsed neutron source is well-defined as a
function of their arrival time. Electromagnetic neutron accelerator/decelerator
synchronized with the neutron time-of-flight is capable of selectively changing
the neutron velocity and concentrating the velocity distribution. Possible
enhancement of the neutron intensity at a specific neutron velocity by orders
of magnitude is discussed together with an experimental design.

Instrumentation and Detectors;High Energy Physics - Experiment;Nuclear Experiment;Accelerator Physics