## ANALYSIS OF NEUTRON CROSS SECTION OF N-14 AND O-16 WITH AN APPROXIMATE R-MATRIX THEORYNAIG Nuclear Research LaboratoryUkishima-cho 4-1, Kawasaki-ku, Kawasaki 210, Japan A simple many-channel multi-level resonance formula is derived on the assumption that the same spin-parity resonance levels have the same ratios of reduced width amplitude between different channels. The deduced formula are applied to neutron total cross section analysis of N-14 and O-16, and with obtained parameters, angular distributions of neutron elastic scattering from the nuclei are calculated for JENDL-3T. KEYWORDS: R-matrix, collision matrix, N-14, O-16, resonance analysis, neutron total cross section, neutron elastic scattering ang. distribution |