INTERACTION OF SLOW-NEUTRONS WITH MOVING MATTER

The problem of slow-neutron interaction with moving matter is consider ed. The concept of an effective potential is used to take into account medium effects. It is shown that such interactions change the neutron energy (this is in accord with the results of previous investigations ). For a given potential, this phenomenon is purely classical far rath er wide variations of the parameters characterizing the motion in ques tion. The energy spectra of interacted neutrons are found for some par ticular cases of the accelerated motion of a slab of matter. Essential ly quantum phenomena occur in the reflection of neutrons from an accel erated mirror if the latter is separated from the incident beam. The s hape of the spectrum of neutron velocities exceeding classically acces sible values is found for this case. Experiments to observe changes in the energy of neutrons interacting with moving samples are proposed.