ANOMALOUS PROPERTIES OF INTERACTION AND COLLISIONS OF A MOVING NEUTRAL ATOM OR MOLECULE WITH A MODULATED SURFACE Vladimir I. Vysotskii, Nikolae V. Maksyta. Kiev Shevchenko University, Radiophysical Faculty, 252033, Kiev, Ukraine The paper discusses the new phenomenon of the physics of neutral atoms collisions - non-diffraction velocity and frequency-dependent collision and interaction between the moving neutral atom (or molecule) and the target surface having a by-surface periodical electric or magnetic field.