Cross-section measurements of the (n,2n) and (n,p) reactions on 124,126,128,130,131,132Xe in the 14 MeV region and theoretical calculations of their excitation functions
Cross-section measurements of the (n,2n) and (n,p) reactions on 124,126,128,130,131,132Xe in the 14 MeV region and theoretical calculations of their excitation functions
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124,126,128,130,131,132Xe在14 MeV区域的(n,2n)和(n,p)反应的截面测量及其激发函数的理论计算
DOI：
10.1088/1674-1137/ac3fa4
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Zhou Liang
中科院分区：
文献类型：
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作者：
Luo Junhua;Jiang Li;Liang Juncheng;Tuo Fei;He Long;Zhou Liang
测量了124Xe(n, 2n)123Xe、126Xe(n, 2n)125Xe、128Xe(n, 2n)127Xe、130Xe(n, 2n)129mXe、132Xe(n, 2n)131mXe、130Xe(n, 2n)131mXe、131Xe(n, p)130I、131Xe(n, p)131I和132Xe(n, p)132I在13.5、13.8、14.1、14.4和14.8 MeV中子能量下的反应截面。单能中子是在中国工程物理研究院用K-400中子发生器用固体3H- ti靶进行3H(d,n)4He反应产生的。采用高纯度锗检测器测定产物的活性。反应93Nb(n, 2n)92mNb和27Al(n, α)24Na用于中子通量标定。在13-15 MeV中子能量范围内获得了氙同位素（n,2n）和（n,p）反应的截面。然后将这些截面与国际原子能机构交换格式（EXFOR）数据库导出的实验数据以及CENDL-3， ENDF/B-VIII的评估结果进行比较。0、JENDL-4.0、RUSFOND和JEFF-3.3数据库，以及使用TALYS-1.95代码获得的理论激励函数。本文首次报道了除124Xe(n, 2n)123Xe和132Xe(n, p)132I外的反应在13.5、13.8和14.1 MeV下的截面。本研究结果有助于为这些反应在13-15 MeV区域提供更好的截面约束，从而提高相应数据库的质量。同时，这些数据也可用于核反应模型相关参数的验证。
The reaction cross-sections of 124Xe(n, 2n)123Xe, 126Xe(n, 2n)125Xe, 128Xe(n, 2n)127Xe, 130Xe(n, 2n)129mXe, 132Xe(n, 2n)131mXe, 130Xe(n, p)130I, 131Xe(n, p)131I, and 132Xe(n, p)132I were measured at the 13.5, 13.8, 14.1, 14.4, and 14.8 MeV neutron energies. The monoenergetic neutrons were generated through the 3H(d,n)4He reaction at the China Academy of Engineering Physics using the K-400 Neutron Generator with a solid 3H-Ti target. A high-purity germanium detector was used to measure the activities of the product. The reactions 93Nb(n, 2n)92mNb and 27Al(n, α)24Na served for neutron flux calibration. The cross sections of the (n,2n) and (n,p) reactions of the xenon isotopes were acquired within the 13–15 MeV neutron energy range. These cross-sections were then compared with the IAEA-exchange format (EXFOR) database-derived experimental data together with the evaluation results of the CENDL-3, ENDF/B-VIII.0, JENDL-4.0, RUSFOND, and JEFF-3.3 data libraries as well as the theoretical excitation function obtained using the TALYS-1.95 code. The cross-sections of the reactions (except for the 124Xe(n, 2n)123Xe and 132Xe(n, p)132I) at 13.5, 13.8, and 14.1 MeV are reported for the first time in this work. The present results are helpful to provide better cross-section constraints for these reactions in the 13–15 MeV region, thus improving the quality of the corresponding database. Meanwhile, these data can also be used for the verification of relevant nuclear reaction model parameters.