Cross-sections of photoneutron reaction ${}^{\mathrm{nat}}$Mo($\gamma ,x$n)${}^{93m}$Mo at the bremsstrahlung energy up to 95 MeV

Abstract

The photoproduction of the ${}^{93m}$Mo nucleus on natural molybdenum was studied using the electron beam of the LUE-40 linac RDC "Accelerator" NSC KIPT. Measurements were performed using the activation method and off-line $\gamma$-ray spectrometric technique. For the ${}^{\mathrm{nat}}$Mo($\gamma ,x$n)${}^{93m}$Mo reaction the experimental flux-averaged cross-section <$\sigma (E_{\gamma \max })$>$_\rm m$ at the bremsstrahlung end-point energy range of 38--93 MeV was first time determined. The theoretical values of the yields $Y_{\mathrm{m},\mathrm{g}}(E_{\gamma \max })$ and flux-averaged cross-sections <$\sigma (E_{\gamma \max })$>${}_{\mathrm{m},\mathrm{g}}$ for the ${}^{\mathrm{nat}}$Mo($\gamma ,x$n)${}^{93m,\mathrm{g}}$Mo reactions were calculated using the cross-sections $\sigma (E_{\gamma })$ from the TALYS1.96 code for different gamma strength functions and level density models. The comparison showed strong discrepancies between the experimental values and the theoretical results of <$\sigma (E_{\gamma \max })$>${}_m$.

8 pages, 9 figures, 2 tables. arXiv admin note: text overlap with arXiv:2308.02243, arXiv:2311.03038