ON THE POSSIBILITY TO OBSERVE THE LONGITUDINAL GOOS-HANCHEN SHIFT WITH COLD NEUTRONS

In this paper, longitudinal Goos-Hanchen displacement of neutron beams suffering total reflection, is presented, The theoretically computed calculations show that as in the case of photon beams, this longitudin al displacement of neutrons is of the order of some tens of micrometer s. From a fundamental point of view, this phenomenon could be used to investigate surface magnetism and surface superconductivity. From a te chnical point of view, two possible setups to observe this phenomenon are suggested. (C) 1997 Elsevier Science B.V.