A Study of the Energy Dependence of the Th232 Capture Cross Section in the Energy Region 0.1 to 3.4 eV

摘要

Furthermore, if a value of 24 mev for the radiation width for the negative resonance is used one finds that the reduced neutron width for the same resonance amounts to 1.82 ± 0.25 mev. Using these parameters together with the resonance parameters for the positive resonances a value of the total microscopic scattering cross section at 0.025 eV has been calculated as 12.2 ± 0.4 b.nA value of the contributions above 0.5 eV to the resonance integral from the "tail" of the negative resonance and the l/v-parts of the positive resonances has also been calculated giving the result 1.6 b. Finally, the g-factor (Westcott's nomenclature) for a Maxwelllan spectrum at 20 C becomes 0. 994.