Abstract
The bremsstrahlung flux-averaged cross-sections \(\langle {\sigma (E_{{\gamma \mathrm{max}}})}\rangle \) and the cross-sections per equivalent photon \(\langle {\sigma (E_{{\gamma \mathrm{max}}})_{\mathrm{Q}}}\rangle \) were measured for the photonuclear multiparticle reaction \(^{27}\!\mathrm{Al}(\gamma ,\textit{x}; \textit{x} = {^{3}\mathrm{He}} + pd + 2pn)^{24}\mathrm{Na}\) at bremsstrahlung end-point energies ranging from 35 to 95 MeV. The experiments were performed using the beam from the NSC KIPT electron linear accelerator LUE-40 with the use of the \(\gamma \)-activation technique. The bremsstrahlung quantum flux was calculated with the program GEANT4.9.2 and, in addition, was monitored by means of the \(^{100}\mathrm{Mo}(\gamma ,n)^{99}\mathrm{Mo}\) reaction. The cross-sections \(\sigma (E)\) were computed using the TALYS1.9 code with the default options. The measured average cross-sections \(\langle {\sigma (E_{{\gamma \mathrm{max}}})}\rangle \) and \(\langle {\sigma (E_{{\gamma \mathrm{max}}})_{\mathrm{Q}}}\rangle \) have appeared to be higher by factors of 2.0–2.4 than the theoretical results. The experimental results have been found to be in good agreement with the data of other laboratories. Consideration is given to special features of calculation of \(\langle {\sigma (E_{{\gamma \mathrm{max}}})}\rangle \) and \(\langle {\sigma (E_{{\gamma \mathrm{max}}})_{\mathrm{Q}}}\rangle \) for the \(^{27}\!\mathrm{Al}(\gamma ,\textit{x})^{24}\mathrm{Na}\) reaction, with occurrence of three \(^{27}\!\mathrm{Al}\) photodisintegration channels.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The data generated during the current study are available from the corresponding author on reasonable request.]
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Vodin, A.N., Deiev, O.S., Timchenko, I.S. et al. Cross-sections for the \({^{27}\!\mathrm{Al}}(\gamma ,x)^{24}\mathrm{Na}\) multiparticle reaction at \(E_{{\gamma \mathrm{max}}}\) = 35–95 MeV. Eur. Phys. J. A 57, 207 (2021). https://doi.org/10.1140/epja/s10050-021-00483-y
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DOI: https://doi.org/10.1140/epja/s10050-021-00483-y