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Cross sections for 14 MeV neutron interaction with lutetium isotopes and their theoretical excitation functions

Chinese Physics C 2024年第5期48卷 244-256页

作者：宋月丽周丰群李勇张晓朋姬鹏飞孙小军 School of Electrical and Mechanical Engineering Pingdingshan UniversityPingdingshan 467000China School of Information Engineering Pingdingshan UniversityPingdingshan 467000China

The cross-sections for the 175Lu(n,p)175Yb,175Lu(n,α)172Tm,176Lu(n,α)173Tm,175Lu(n,2n)174mLu,and 175Lu(n,2n)174gLu reactions at 13.57,14.0314.62,and 14.86 MeV neutron energies were measured using an activation *** theoretical excitation functions of these reactions were calculated using the talys-1.95 *** reaction cross-section data experimentally obtained were analyzed and compared with experimental data reported in the literature,data from five major evaluated nuclear data libraries of IAEA,and theoretical values based on *** data obtained at some neutron energies agree with some of the data reported in the literature and theoretical values based on *** consistency of the theoretical curves of excitation functions based on talys-1.95 with the data obtained in this study and those reported in the literature is higher than that of the evaluation curves of excitation functions for the 175Lu(n,p)175Yb,175Lu(n,α)172 Tm,and 176Lu(n,α)173Tm *** study is helpful because it provides new evaluated reaction cross-section data on lutetium(which is a fusion reactor material),improves the quality of neutron-induced reaction cross section data libraries,and advances the research on related applications.

关键词： nuclear reaction cross sections of lutetium isotopes activation technique D-T neutron theoretical calculations talys-1.95

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利用talys和EMPIRE研究质子诱发钼靶核反应

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原子核物理评论 2021年第4期38卷 470-478页

作者：孙慧陈志强韩瑞刘丙岩张鑫田国玉石福栋中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049

利用加速器直接生产^(99)Mo和^(99m)Tc在核医学领域具有良好的发展前景,精确可靠的核反应数据对于同位素生产具有重要意义。本文通过对EXFOR数据库中^(nat)Mo(p,x)^(96m+g)Tc、^(100)Mo(p,x)^(99)Mo、^(100)Mo(p,2n)^(99m)Tc核反应截面实验数据进行分析,采用多项式拟合实验数据给出参考值。并利用talys-1.95和EMPIRE-3.2.3程序结合不同能级密度、预平衡发射等模型计算了40 MeV能量以下^(nat)Mo(p,x)^(96m+g)Tc、^(100)Mo(p,x)^(99m)Tc、^(100)Mo(p,2n)^(99m)Tc核反应的激发函数。对于^(nat)Mo(p,x)^(96m+g)Tc核反应,talys-1.95程序采用能级密度输入参数ldmodel 6时,preeqmode 1,2模型计算结果与实验数据符合最好。对于^(100)Mo(p,x)^(99)Mo核反应,talys-1.95程序采用能级密度输入参数ldmodel 6时,preeqmode 4模型计算结果与实验数据符合最好。对于^(100)Mo(p,x)^(99)Mo核反应,EMPIRE-3.2.3程序LEVDEN 2模型计算结果与实验数据符合最好。

关键词：质子诱发反应激发函数 ^(99)Mo ^(99m)Tc talys-1.95 EMPIRE-3.2.3

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Measurements of ^(nat) Cd(γ,x)reaction cross sections and isomer ratio of ^(1,5m.g)Cd with the bremsstrahlung end-point energies of 50 and 60 MeV

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Chinese Physics C 2021年第12期45卷 80-93页

作者： Muhammad Nadeem Md.Shakilur Rahman Muhammad Shahid Guinyun Kim Haladhara Naik Nguyen Thi Hien Department of Physics Kyungpook National UniversityDaegu 41566Korea Institute of Nuclear Science and Technology Bangladesh Atomic Energy CommissionSavarDhakaBangladesh Radiochcmistry Division Bhabha Atomic Research CentreMumbai 400085India

The flux-weighted average cross sections ^(nat) Cd(γ,xn)^(115g,m,111m,109,107,105,104)Cd and ^(nat) Cd(γ,x)^113g,112,111g,110m)Ag reactions were measured at the bremsstrahlung end-point energies of 50 and 60 *** activa tion and off-line y-ray spectrometric technique was carried out using the 100 MeV electron linear accelerator at the Pohang Accelerator Laboratory,*** ^(nat)lCd(γ,xn) reaction cross sections as a function of photon energy were theoretically calculated using the talys-1.95 and the EMPIRE-3.2 Malta ***,the flux-weighted average cross sections were obtained from the theoretical values of mono-energetic *** values were compared with the flux-weighted values from the present study and were found to be in general *** measured experimental reaction cross-sections and integral yields were described for cadmium and silver isotopes in the ^(nat)Cd(γ,xn)^(115g,m,111m,109,107,105,104) and ^(nat)Cd(γ,x)^(113g,112.111g,110m)Ag *** isomeric yield ratio(IR) of ^(115g.m)Cd in the ^(nat)Cd(γ,xn) reaction was determined for the two bremsstrahlung end-point *** measured isomeric yield ratios of ^(115g,m)Cd in the ^(nat)Cd(γ,xn) reaction were also compared with the theoretical values of the nuclear model codes and previously published literature data of the ^(116)Cd(γ,x) and ^116(γ,2n) *** was found that the IR value increases with increasing projectile energy,which demonstrates the characteristic of excitation ***,the higher IR value of ^(115g.m)Cd in the ^(116)Cd(n,2n)reaction compared to that in the ^(116)Cd(γ,x)reaction indicates the role of compound nuclear spin alongside excitation energy.

关键词： ^(nat)Cd(γ xn)reaction cross sections isomer yield ratio of^(115g m)Cd off-lineγ-ray spectrometric technique talys-1.95 TENDL-2019 EMPIRE-3.2 Malta

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