arXiv 2205.147332022-05-29nucl-ex

能量范围$E_{\rm{γmax}}$ = 35-94 MeV的光核反应${^{65}\rm{Cu}}(γ,n)^{64}\rm{Cu}$和${^{63}\rm{Cu}}(γ,xn)^{63-x}\rm{Cu}$截面

Photonuclear reactions ${^{65}\rm{Cu}}(γ,n)^{64}\rm{Cu}$ and ${^{63}\rm{Cu}}(γ,xn)^{63-x}\rm{Cu}$ cross-sections in the energy range $E_{\rm{γmax}}$ = 35-94 MeV

O. S. Deiev, I. S. Timchenko, S. M. Olejnik, S. M. Potin, V. A. Kushnir, V. V. Mytrochenko, S. A. Perezhogin, B. I. Shramenko

备注：: 9 pages, 10 figures, 1 table. arXiv admin note: text overlap with arXiv:2111.13904, arXiv:2203.11249

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摘要：

在韧致辐射终点能量$E_{\rm{γmax}}$ = 35-94 MeV范围内，测量了光核反应${^{65}\rm{Cu}}(γ,n)^{64}\rm{Cu}$，${^{63}\rm{Cu}}(γ,n)^{62}\rm{Cu}$，${^{63}\rm{Cu}}(γ,2n)^{61}\rm{Cu}$和${^{63}\rm{Cu}}(γ,3n)^{60}\rm{Cu}$的韧致辐射通量平均截面$\langle{σ(E_{\rm{γmax}})}\rangle$。实验用NSC KIPT直线加速器LUE-40的电子束进行，并使用激活和离线$γ$射线光谱技术。通量平均截面$\langle{σ(E_{\rm{γmax}})}\rangle_{\rm{th}}$的计算是使用来自具有默认选项的TSTMS 1.95代码的截面$σ(E)$值进行的。结果表明，实验平均截面的反应${^{65}\rm{Cu}}(γ,n)^{64}\rm{Cu}$，${^{63}\rm{Cu}}(γ,n)^{62}\rm{Cu}$，${^{63}\rm{Cu}}(γ,2n)^{61}\rm{Cu}$系统高于TMENS 1.95代码中的理论估计。获得的$\langle{σ(E_{\rm{γmax}})}\rangle$补充了不同实验室关于反应$(γ,n)$和$(γ,2n)$的数据。对于反应${^{63}\rm{Cu}}(γ,3n)^{60}\rm{Cu}$，首次测量了$\langle{σ(E_{\rm{γmax}})}\rangle$的值。

英文摘要：

The bremsstrahlung flux-averaged cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle$ for the photonuclear reactions ${^{65}\rm{Cu}}(γ,n)^{64}\rm{Cu}$, ${^{63}\rm{Cu}}(γ,n)^{62}\rm{Cu}$, ${^{63}\rm{Cu}}(γ,2n)^{61}\rm{Cu}$ and ${^{63}\rm{Cu}}(γ,3n)^{60}\rm{Cu}$ have been measured in the range of bremsstrahlung end-point energies $E_{\rm{γmax}}$ = 35-94 MeV. The experiments were performed with the electron beam from the NSC KIPT linear accelerator LUE-40 with the use of the activation and off-line $γ$-ray spectrometric technique. The calculation of the flux-average cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle_{\rm{th}}$ was carried out using the cross-section $σ(E)$ values from the TALYS1.95 code with the default options. It is shown that the experimental average cross-sections for the reactions ${^{65}\rm{Cu}}(γ,n)^{64}\rm{Cu}$, ${^{63}\rm{Cu}}(γ,n)^{62}\rm{Cu}$, ${^{63}\rm{Cu}}(γ,2n)^{61}\rm{Cu}$ are systematically higher than the theoretical estimates in the TALYS1.95 code. The obtained $\langle{σ(E_{\rm{γmax}})}\rangle$ supplement the data of different laboratories for the case of reactions $(γ,n)$ and $(γ,2n)$. For the reaction ${^{63}\rm{Cu}}(γ,3n)^{60}\rm{Cu}$, the values of $\langle{σ(E_{\rm{γmax}})}\rangle$ were measured for the first time.

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