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arXiv · 2311.03038

Cross-section of the ${^{95\rm}\rm{Nb}}$ production on natural molybdenum at the bremsstrahlung end-point energy up to 95 MeV

I. S. Timchenko·O. S. Deiev·S. M. Olejnik·S. M. Potin·V. A. Kushnir·V. V. Mytrochenko·S. A. Perezhogin
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Abstract

The photoproduction of $^{95\rm m}$Nb on ${^{\rm nat}\rm{Mo}}$ was studied using the electron beam of the LUE-40 linac RDC "Accelerator" NSC KIPT. Measurements were performed using activation and off-line $γ$-ray spectrometric techniques. The experimental flux-averaged cross-section $\langle{σ(E_{\rm{γmax}})}\rangle_{\rm{m}}$ for the ${^{\rm nat}\rm{Mo}}(γ,x\rm np)^{95\rm m}$Nb reaction at the bremsstrahlung end-point energy range of 38--93 MeV has been first time obtained. The estimated values $\langle{σ(E_{\rm{γmax}})}\rangle_{\rm{g}}$ for the formation of $^{95}$Nb in the ground state and total cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle_{\rm{tot}}$ for the studied reaction were determined. The theoretical values of the yields $Y_{\rm m,g,tot}(E_{\rm{γmax}})$ and flux-averaged cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle_{\rm{m,g,tot}}$ for the ${^{\rm nat}\rm{Mo}}(γ,x\rm np)^{95\rm m,g,tot}$Nb reactions were calculated using the cross-sections $σ(E)$ from the TALYS1.95 code for six different level density models. The comparison showed a significant excess of the experimental results over the theoretical $\langle{σ(E_{\rm{γmax}})}\rangle_{\rm{m,g,tot}}$ values.

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I. S. Timchenko, O. S. Deiev, S. M. Olejnik, S. M. Potin, V. A. Kushnir, V. V. Mytrochenko, S. A. Perezhogin. 2023-11-06. Cross-section of the ${^{95\rm}\rm{Nb}}$ production on natural molybdenum at the bremsstrahlung end-point energy up to 95 MeV. https://arxiv.org/abs/2311.03038

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