Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2001
The thermal neutron cross-sections for the 164 Dy(n,g) 165 Dy and the 180 Hf(n,g) 181 Hf reaction... more The thermal neutron cross-sections for the 164 Dy(n,g) 165 Dy and the 180 Hf(n,g) 181 Hf reactions have been measured by the activation method at the heavy water thermal neutron facility of the Kyoto University Reactor, KUR. The results measured at 0.0253 eV are 2656 AE 98 b for the 164 Dy(n,g) 165 Dy reaction and 13.04 AE 0.47 b for the 180 Hf(n,g) 181 Hf reaction, respectively. The results have been obtained relative to the reference value of 98.65 AE 0.09 b for the 197 Au(n,g) 198 Au reaction. For dysprosium, most of the experimental data and the evaluated ones in ENDF/B-VI and JEF-2.2 are in good agreement with the present value. For hafnium, the previous measurements and the evaluated ones in ENDF/ B-VI and JENDL-3.2 are in good agreement with the present result. The resonance integrals for the 164 Dy(n,g) 165 Dy and the 180 Hf(n,g) 181 Hf reactions have also been measured relative to the reference value of 1550 AE 28 b for the 197 Au(n,g) 198 Au reaction using a 1=E standard neutron spectrum field of the Kinki University Reactor, UTR-KINKI. The present resonance integral for the 164 Dy(n,g) 165 Dy reaction is 649 AE 24 b, and the existing experimental and the evaluated data are distributed from 335 to 820 b. The present result for the 180 Hf(n,g) 181 Hf reaction is 32.4 AE 1.2 b, and most of the previous measurements and the evaluated values are close to the present measurement. Gryntakis et al. reported the resonance integrals for both reactions, whose results were also in good agreement with the measurements..
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Papers by Moo Hyun Cho