Nuclear Science and Engineering / Volume 17 / Number 4 / December 1963 / Pages 528-533
Technical Paper / dx.doi.org/10.13182/NSE63-A18443
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Measurements of the spatial dependence of the zero power transfer function of the reactor NORA have been performed, using a local reactivity perturbation. Spatial effects were observed for frequencies higher than the break frequency β/l, and the wave nature of the flux space-time variation has been recognized. A theoretical interpretation based on two-group diffusion theory is given by solution of the equations by the finite difference method on an analogue computer. The qualitative agreement between theory and experiment is good.