NUCLEAR-PHYSICAL METHODS AND PROCESSING OF DATA ANALYSIS OF NEUTRON-TEMPERATURE OSCILATIONS IN NEUTRON MULTIPLYING SYSTEMS WITH DELAYED NEUTRONS

External sources with a given frequency excite neutron and temperature oscillations. Analytical treatment and analysis of oscillations were performed under conditions of both the weak coupling and strong coupling between the oscillation branches.The neutron oscillation branch describes the wave propagation along the coolant flow with amplitude rising in the range of high flow velocity and with amplitude decreasing in the range of low velocity and high frequencies, as well as, the oscillation propagation in the opposite direction. The temperature oscillations undergo a weak decrease of amplitudes. The strongly coupled neutron-temperature oscillations are excited, as the microscopic fission cross-sections are dependent on the ”effective ” temperature of thermal neutrons.The influence of delayed neutrons is studied. Comparison between the analytical treatment data and the analysis of experimental measurements confirms these conclusions. PACS: 24.60.-k 1