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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research >Measurement of thermal neutron cross-section and resonance integral for the ~(165)Ho(n,y)~(166g)Ho reaction using electron linac-based neutron source
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Measurement of thermal neutron cross-section and resonance integral for the ~(165)Ho(n,y)~(166g)Ho reaction using electron linac-based neutron source

机译：使用基于电子直线加速器的中子源测量〜（165）Ho（n，y）〜（166g）Ho反应的热中子截面和共振积分

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摘要

The thermal neutron cross-section and the resonance integral of the~(165) Ho(n,γ)~(166 g)Ho reaction have been measured by the activation method using a~( 197)Au(n,y)~(198)Au monitor reaction as a single comparator. The high-purity natural Ho and Au foils with and without a cadmium shield case of 0.5 mm thickness were irradiated in a neutron field of the Pohang neutron facility. The induced activities in the activated foils were measured with a calibrated p-type high-purity Ge detector. The correction factors for the y-ray attenuation (F_g), the thermal neutron self-shielding (C_(th)), the resonance neutron self-shielding (G_(epi)) effects, and the epithermal neutron spectrum shape factor (a) were taken into account. The thermal neutron cross-section for the ~(165)Ho(n,y)~(166g)Ho reaction has been determined to be 59.7 ± 2.5 barn, relative to the reference value of 98.65 ± 0.09 barn for the~( 197)Au(n,γ )~(198)Au reaction. By assuming the cadmium cutoff energy of 0.55 eV, the resonance integral for the ~(165)Ho(n,γ)~(166g)Ho reaction is 671 ±47 barn, which is determined relative to the reference value of 1550 ± 28 barn for the ~(197)Au(n,y)~(198)Au reaction. The present results are, in general, good agreement with most of the previously reported data within uncertainty limits.
机译：通过活化方法使用a〜（197）Au（n，y）〜（）来测量〜（165）Ho（n，γ）〜（166 g）Ho反应的热中子截面和共振积分。 198）Au作为单个比较器监控反应。在浦项中子设施的中子场辐照有和没有0.5毫米厚的镉屏蔽盒的高纯天然Ho和Au箔。用校准的p型高纯度Ge检测器测量活化箔中的诱导活性。 y射线衰减（F_g），热中子自屏蔽（C_（th）），共振中子自屏蔽（G_（epi））效应和超热中子谱形状因子（a）的校正因子被考虑在内。已确定〜（165）Ho（n，y）〜（166g）Ho反应的热中子截面为59.7±2.5 barn，相对于〜（197）的参考值98.65±0.09 barn Au（n，γ）〜（198）Au反应通过假设镉截止能量为0.55 eV，〜（165）Ho（n，γ）〜（166g）Ho反应的共振积分为671±47 barn，这是相对于1550±28 barn的参考值确定的〜（197）Au（n，y）〜（198）Au反应通常，目前的结果与不确定范围内的大多数先前报告的数据具有良好的一致性。

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  • 作者

    Van Do Nguyen; Due Khue Pham; Tien Thanh Kim; Guinyun Kim; Manwoo Lee; Kyung Sook Kim; Heung-Sik Kang; Moo-Hyun Cho; In Soo Ko; Won Namkung;

  • 作者单位

    Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Hanoi, Viet Nam;

    Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Hanoi, Viet Nam;

    Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Hanoi, Viet Nam;

    Department of Physics, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Department of Physics, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Department of Physics, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;

    Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;

    Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;

    Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;

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  • 关键词

    thermal neutron cross-section; resonance integral; ~(165)ho(n; γ)~(166g)ho; ~(197)au(n; y)~(198)au; 65 mev electron linac; activation method;

    机译：热中子截面;共振积分;〜（165）ho（n;γ）〜（166g）ho;〜（197）au（n;y）〜（198）au;65 mev电子直线加速器;激活方法;

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