کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1686395 1010598 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of thermal neutron cross-sections and resonance integrals for 179Hf(n,γ)180mHf and 180Hf(n,γ)181Hf reactions at the Pohang neutron facility
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Measurement of thermal neutron cross-sections and resonance integrals for 179Hf(n,γ)180mHf and 180Hf(n,γ)181Hf reactions at the Pohang neutron facility
چکیده انگلیسی

The thermal-neutron cross-sections and the resonance integrals for the 179Hf(n,γ)180mHf and the 180Hf(n,γ)181Hf reactions have been measured by the activation method. The high purity Hf and Au metallic foils within and without a Cd shield case were irradiated in a neutron field of the Pohang neutron facility. The gamma-ray spectra from the activated foils were measured with a calibrated p-type high-purity Ge detector.In the experimental procedure, the thermal neutron cross-sections, σ0, and resonance integrals, I0, for the 179Hf(n,γ)180mHf and the 180Hf(n,γ)181Hf reactions have been determined relative to the reference values of the 197Au(n,γ)198Au reaction, with σ0 = 98.65 ± 0.09 barn and I0 = 1550 ± 28 barn. In order to improve the accuracy of the experimental results, the interfering reactions and necessary correction factors were taken into account in the determinations. The obtained thermal neutron cross-sections and resonance integrals were σ0 = 0.424 ± 0.018 barn and I0 = 6.35 ± 0.45 barn for the 179Hf(n,γ)180mHf reaction, and σ0 = 12.87 ± 0.52 barn and I0 = 32.91 ± 2.38 barn for the 180Hf(n,γ)181Hf reaction. The present results are in good agreement with recent measurements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 266, Issue 1, January 2008, Pages 21–29
نویسندگان
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