, Volume 239, Issue 3, pp 455-458

Thermal neutron cross section and resonance integral of the reaction of135 Cs(n,γ)136 Cs: Fundamental data for the transmutation of nuclear waste

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To determine the cross sections of the135Cs(n,γ)136Cs reaction, a sample of135Cs included in a “standardized solution” of137Cs was used as a target and irradiated in a reactor. The ratio of the atom number of135Cs to that of137Cs was determined to be 0.89±0.03 with a quadrupole mass spectrometer. The thermal cross section and the resonance integral measured in this study were determined to be 8.3±0.3 and 38.1±2.6 b respectively.