Measurements of fast neutron capture cross section for 180Hf

• Published in: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2019-07, Vol.451 (C), p.24-26
• Main Authors: Zhou, Fengqun, Song, Yueli, Li, Yong, Sun, Xiaojun, Chang, Xinyi
• Format: Article
• Language: English
• Subjects: (n,γ) reaction cross-section; Activation method; Hafnium-180; Off-line γ-ray spectrometry; Talys-1.8
• ISSN: 0168-583X; 1872-9584
• DOI: 10.1016/j.nimb.2019.04.084

•The first experimental cross-section data for the 180Hf(n,γ)181Hf reaction induced neutrons around 14 MeV are presented.•93Nb(n,2n)92mNb monitor reaction was used for neutron fluence measurement.•The measurements are expected to help new cross-section evaluations around 14 MeV neutrons for the 180Hf(n,γ)181Hf reaction. The first experimental cross-section data for the 180Hf(n,γ)181Hf reaction have been measured within the neutron energies range of 13.5–14.8 MeV using the activation technique. The fast neutrons were produced by the T(d,n)4He reaction. Induced activities were measured by a high-resolution γ-ray spectrometer with high-purity germanium detector. The neutron fluence was determined by using the monitor reaction 93Nb(n,2n)92mNb. The neutron energies in the measurements were determined beforehand by the method of cross section ratios for the 90Zr(n,2n)89m+gZr and 93Nb(n,2n)92mNb reactions. The experimentally determined cross-section values were compared with the evaluation nuclear data in several major libraries of International Atomic Energy Agency and the theoretically calculated results by using the Talys1.8 code.