Cross-section of the ⁹⁵Nb production on natural molybdenum at the bremsstrahlung end-point energy up to 95 MeV

The photoproduction of 95 m 95 m Nb on ⁿatMo nat 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 γ -ray spectrometric techniques. The experimental flux-averaged cross-section σ (E_γ max) _m ⟨ σ ( E γ max ) ⟩ m for the ⁿᵃᵗMo(γ ,x np)95 m nat Mo ( γ , x n p ) 95 m Nb reaction at the bremsstrahlung end-point energy range of 38–93 MeV has been first time obtained. The estimated values σ (E_γ max) _g ⟨ σ ( E γ max ) ⟩ g for the formation of ⁹⁵ 95 Nb in the ground state and total cross-sections σ (E_γ max) _tot ⟨ σ ( E γ max ) ⟩ tot for the studied reaction were determined. The theoretical values of the yields Yₘ,g,tot(E_γ max) Y m,g,tot ( E γ max ) and flux-averaged cross-sections σ (E_γ max) _m,g,tot ⟨ σ ( E γ max ) ⟩ m , g , tot for the ⁿᵃᵗMo(γ ,x np)95 m,g,tot nat Mo ( γ , x n p ) 95 m , g , t o t Nb reactions were calculated using the cross-sections σ (E) 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 σ (E_γ max) _m,g,tot ⟨ σ ( E γ max ) ⟩ m , g , tot values.