Cross-sections for the ${}^{27}\mathrm{al}(\gamma ,\text{x}{)}^{22}\mathrm{na}$ multichannel reaction with the 28.3 mev difference of the reaction thresholds

Abstract

The bremsstrahlung flux-averaged cross-sections $⟨\sigma (E_{\gamma \max })⟩$ and the cross-sections per equivalent photon $⟨\sigma (E_{\gamma \max }{)}_{\mathrm{Q}}⟩$ were first measured for the photonuclear multichannel reaction ${}^{27}\mathrm{Al}(\gamma ,\text{x}{)}^{22}\mathrm{Na}$ at end-point bremsstrahlung gamma energies ranging from 35 MeV to 95 MeV. The experiments were performed with 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 ${}^{100}\mathrm{Mo}(\gamma ,\mathrm{n}{)}^{99}\mathrm{Mo}$ reaction. The flux-averaged cross-sections were calculated using the partial cross-section $\sigma (E)$ values computed with the TALYS1.95 code for different level density models. Consideration is given to special features of calculating the cross-sections $⟨\sigma (E_{\gamma \max })⟩$ and $⟨\sigma (E_{\gamma \max }{)}_{\mathrm{Q}}⟩$ for the case of the final nucleus ${}^{22}\mathrm{Na}$ production in the ${}^{27}\mathrm{Al}$ photodisintegration reaction via several partial channels $\text{x}$: $\mathrm{n}\alpha +\mathrm{dt}+\mathrm{npt}+2n{}^3\mathrm{He}+n2d+2npd+2p3n$.

8 pages, 9 figures, 1 table, 19 references. arXiv admin note: text overlap with arXiv:2012.14475

References in corpus (3)

• Photoneutron reactions on ${}^{\text{93}}$Nb at $E_{\gamma \text{max}}$=33-93 MeV
• Cross-sections for the ${}^{27}\mathrm{Al}(\gamma ,\text{x}{)}^{24}\mathrm{Na}$ multiparticle reaction at $E_{\gamma \max }$ = 40 $÷$ 95 MeV
• Photoneutron Reactions ${}^{181}\mathrm{Ta}(\gamma ,\text{x}\mathrm{n};\text{x}=1÷8{)}^{181-\text{x}}\mathrm{Ta}$ AT $E_{\gamma \max }$ = 80 $÷$ 95 MeV

Cited by in corpus (4)

• Isomeric pair ${}^{95\mathrm{m},\mathrm{g}}\mathrm{Nb}$ in photonuclear reactions on ${}^{\mathrm{nat}}$Mo at end-point bremsstrahlung energy of 35-95 MeV
• Production of ${}^{180\mathrm{m}}$Hf in photoproton reaction ${}^{181}$Ta$(\gamma ,p)$ at energy $E_{\gamma \max }$ = 35-95 MeV
• Photonuclear reactions on the stable isotopes of selenium at bremsstrahlung end-point energies of 10-23 MeV
• Cross-section of the ${}^{95}\mathrm{Nb}$ production on natural molybdenum at the bremsstrahlung end-point energy up to 95 MeV