Cross-sections for the $${^{27}\!\mathrm{Al}}(\gamma ,x)^{24}\mathrm{Na}$$ multiparticle reaction at $$E_{{\gamma \mathrm{max}}}$$ = 35–95 MeV

The bremsstrahlung flux-averaged cross-sections $\langle{\sigma(E_{\rm{\gamma max}})}\rangle$ and the per equivalent photon max}})_{\rm{Q}}}\rangle$ were measured for photonuclear multiparticle reaction $^{27}\!\rm{Al}(\gamma,\textit{x}; \textit{x} = {^{3}\rm{He}} + pd 2pn)^{24}\rm{Na}$ at end-point energies ranging from 40 MeV to 95 MeV. experiments performed using beam NSC KIPT electron linear accelerator LUE-40 with use of $\gamma$-activation technique. quantum flux was calculated program GEANT4 and, in addition, monitored by means $^{100}\rm{Mo}(\gamma,n)^{99}\rm{Mo}$ reaction. $\sigma(E)$ computed TALYS1.9 code default options. average have appeared be higher factors 2.0 2.4 than theoretical results. experimental results been found good agreement data other laboratories. Consideration is given special features calculation $^{27}\!\rm{Al}(\gamma,\textit{x})^{24}\rm{Na}$ reaction, occurrence three $^{27}\!\rm{Al}$ photodisintegration channels. paper also discusses possibility monitoring $\gamma$-quantum energy region above 30