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

• Published in: arXiv.org 2022-05
• Main Authors: Deiev, O S, Timchenko, I S, Olejnik, S M, Potin, S M, Kushnir, V A, Mytrochenko, V V, Perezhogin, S A, Shramenko, B I
• Format: Article
• Language: English
• Subjects: Bremsstrahlung; Cross-sections; Electron beams; Gamma rays; Photonuclear reactions; Spectrometry
• ISSN: 2331-8422

The bremsstrahlung flux-averaged cross-sections \(\langle{\sigma(E_{\rm{\gamma max}})}\rangle\) for the photonuclear reactions \({^{65}\rm{Cu}}(\gamma,n)^{64}\rm{Cu}\), \({^{63}\rm{Cu}}(\gamma,n)^{62}\rm{Cu}\), \({^{63}\rm{Cu}}(\gamma,2n)^{61}\rm{Cu}\) and \({^{63}\rm{Cu}}(\gamma,3n)^{60}\rm{Cu}\) have been measured in the range of bremsstrahlung end-point energies \(E_{\rm{\gamma max}}\) = 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 \(\gamma\)-ray spectrometric technique. The calculation of the flux-average cross-sections \(\langle{\sigma(E_{\rm{\gamma max}})}\rangle_{\rm{th}}\) was carried out using the cross-section \(\sigma(E)\) values from the TALYS1.95 code with the default options. It is shown that the experimental average cross-sections for the reactions \({^{65}\rm{Cu}}(\gamma,n)^{64}\rm{Cu}\), \({^{63}\rm{Cu}}(\gamma,n)^{62}\rm{Cu}\), \({^{63}\rm{Cu}}(\gamma,2n)^{61}\rm{Cu}\) are systematically higher than the theoretical estimates in the TALYS1.95 code. The obtained \(\langle{\sigma(E_{\rm{\gamma max}})}\rangle\) supplement the data of different laboratories for the case of reactions \((\gamma,n)\) and \((\gamma,2n)\). For the reaction \({^{63}\rm{Cu}}(\gamma,3n)^{60}\rm{Cu}\), the values of \(\langle{\sigma(E_{\rm{\gamma max}})}\rangle\) were measured for the first time.