New cross section measurements on tungsten isotopes around 14 MeV neutrons and their excitation functions  

作　　者：Yong Li Fengqun Zhou Yajuan Hao Xiaoqiang Ma Pengfei Ji Xiaopeng Zhang Shuqing Yuan 李勇;周丰群;郝亚娟;马小强;姬鹏飞;张晓朋;袁书卿(School of Electrical and Mechanical Engineering,Pingdingshan University,Pingdingshan 467000,China;School of Information Engineering,Pingdingshan University,Pingdingshan 467000,China)

机构地区：[1]School of Electrical and Mechanical Engineering,Pingdingshan University,Pingdingshan 467000,China [2]School of Information Engineering,Pingdingshan University,Pingdingshan 467000,China

出　　处：《Chinese Physics C》2022年第5期95-107,共13页中国物理C（英文版）

基　　金：Supported by the National Natural ScienceFoundation of China(11575090)。

摘　　要：New cross sections of the^(183)W(n,α)^(180m)Hf,^(186)W(n,d*)^(185)Ta,^(182)W(n,p)^(182)Ta,^(184)W(n,p)^(184)Ta,^(182)W(n,2n)^(181)W,^(184)W(n,α)^(181)Hf,and^(186)W(n,α)^(183)Hf reactions were measured in the neutron energy range of 13.5-14.8 MeV via the activation technique to improve the database and resolve discrepancies.Monoenergetic neutrons in this energy range were produced via the T(d,n)^(4)He reaction on a solid Ti-T target.The activities of the irradiated monitor foils and samples were measured using a well-calibrated high-resolution HPGe detector.Theoretical calculations of the excitation functions of the seven nuclear reactions mentioned above in the neutron energies from the threshold to 20 MeV were performed using the nuclear theoretical model program TALYS-1.9 to aid new evaluations of cross sections on tungsten isotopes.The experimental data obtained were analyzed and compared with that of previous experiments conducted by other researchers,and with the evaluated data available in the five major evaluated nuclear data libraries of IAEA(namely ENDF/B-VIII.0 or ENDF/B-VII.0,JEFF-3.3,JENDL-4.0u+,CENDL-3.2,and BROND-3.1 or ROSFOND-2010),and the theoretical values acquired using TALYS-1.9 nuclear-reaction modeling tools.The new cross section measurements agree with those of some recent experiments and theoretical excitation curves at the corresponding energies.The consistency of the theoretical excitation curves based on TALYS-1.9 with these experimental data is better than that of the evaluated curves available in the five major nuclear data libraries of IAEA.

关 键 词：cross sections TUNGSTEN activation technique off-line gamma-ray spectrometry theoretical calculations TALYS-1.9 

分 类 号：TL341[核科学技术—核技术及应用]