Xenon Spatial Oscillations

Calculation resuits are given which show the effect of nonzero power coefficients on the xenon axial osciliation threshold flux. Threshoid values are also given for flux tilt oscillations in a cylindrical reactor with a flattened radial power distribution. The calculations were performed on the basis of the material buckling required to excite the first harmonic. The oscillation period at the threshold is shown as a function of the threshold flux level. (auth)