method of determining the average life time of thermal neutrons in rocks and ores

摘要

method of determining the average life time of thermal neutrons in rocks and ores, of crossed boreholes based on the irradiation of pulse bec com with the use of fast neutron detector is not sensitive to heat u043du0435u0439u0442u0440u043eu043du0430u043c, a fact that, in order to reduce the errors by reducing the u043bu0438u044fu043du0438u044f wells, flux u0444u043eu0442u043eu043du0435u0439u0442u0440u043eu043du043eu0432,u0437u0430u0445u0432u0430u0442u043du043eu0433u043e arising in the interaction of gamma radiation with nuclei isotopes within the topic environment, measure the interval of time of at least five maxi u043cu0430u043bu044cu043du044bu0445 times life of thermal neutrons in the rocks, with a time delay after the end of the neutron pulsewith the nearest neutron impulse time delay must be equal to the minimum amount of time u0442u0435u0440u043cu0430u043bu0438u0437u0430u0446u0438u0438 fast neutrons in the rocks, and data are the average life time of thermal neutrons in the rocks.