光中子反应$^{181}\rm{Ta}(γ,\textit{x}n; \textit{x} = 1 ÷8)^{181-\textit{x}}\rm{Ta}$ AT $E_{\rm{γmax}}$ = 80 $÷$ 95 MeV
Photoneutron Reactions $^{181}\rm{Ta}(γ,\textit{x}n; \textit{x} = 1 ÷8)^{181-\textit{x}}\rm{Ta}$ AT $E_{\rm{γmax}}$ = 80 $÷$ 95 MeV
摘要：
在韧致辐射能量为80 - 95 MeV的条件下，测量了$^{181}\rm{Ta}(γ,\textit{x}n; \textit{x} = 1 ÷8)^{181-\textit{x}}\rm{Ta}$光中子反应的韧致辐射通量平均截面$\langle{σ(E_{\rm{γmax}})}\rangle$。使用来自NSC KIPT电子线性加速器LUE-40的射束，使用残余$γ$ -活性方法进行测量。理论$\langle{σ(E_{\rm{γmax}})}\rangle$值是使用来自TMENS 1.9代码的横截面$σ(E)$计算的。通过比较实验测量的截面$\langle{σ(E_{\rm{γmax}})}\rangle$和理论计算值，证明了对于最多逃逸6个中子的反应，它们之间有很好的一致性，而对于$(γ,7\rm{n})$和$(γ,8\rm{n})$反应，它们之间有很大的差别。已发现$^{181}\rm{Ta}(γ,3n)^{178g,m}\rm{Ta}$反应产物的平均横截面$d(E_{\rm{γmax}})$的异构体比率。计算结果与文献数据和TANGOS 1.9程序计算结果进行了比较。
英文摘要：
The bremsstrahlung flux-averaged cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle$ for the $^{181}\rm{Ta}(γ,\textit{x}n; \textit{x} = 1 ÷8)^{181-\textit{x}}\rm{Ta}$ photoneutron reactions have been measured at end-point bremsstrahlung energies ranging from 80 MeV to 95 MeV. The measurements were performed with the beam from the NSC KIPT electron linear accelerator LUE-40 using the residual $γ$-activity method. The theoretical $\langle{σ(E_{\rm{γmax}})}\rangle$ values were computed using the cross-sections $σ(E)$ from TALYS1.9 code. A comparison between the measured cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle$ and the theoretical values has demostrated their good agreement for the reactions with escape of up to 6 neutrons, and substantial differences for the $(γ,7\rm{n})$ and $(γ,8\rm{n})$ reactions. Isomeric ratios of the average cross-sections $d(E_{\rm{γmax}})$ have been found for the $^{181}\rm{Ta}(γ,3n)^{178g,m}\rm{Ta}$ reaction products. The results have been compared with the literature data and the computations based on TALYS1.9 code.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
