Investigation of discreteγradiation in interactions of 14.9-MeV neutrons with natural silicon by a totalγ-radiation measurement technique

The discrete $\ensuremath{\gamma}$ radiation in the interaction of 14.9-MeV neutrons and a natural silicon sample is investigated with a total $\ensuremath{\gamma}$-radiation measurement (TGRM) technique. Fifty prompt $\ensuremath{\gamma}$ lines, one delayed $\ensuremath{\gamma}$ line, and seven final nuclei are identified. Forty-one possible transitions are designated. Differential production cross sections of 40 $\ensuremath{\gamma}$ lines at ${40}^{\ifmmode^\circ\else\textdegree\fi{}}$, ${55}^{\ifmmode^\circ\else\textdegree\fi{}}$, ${90}^{\ifmmode^\circ\else\textdegree\fi{}}$, ${125}^{\ifmmode^\circ\else\textdegree\fi{}}$, and ${140}^{\ifmmode^\circ\else\textdegree\fi{}}$ are determined. Using relative differential production cross sections, accurate integral isotopic cross sections of the $^{28}\mathrm{Si}$($n$,$p$)$^{28}\mathrm{Al}$ reaction are determined, and partial integral isotopic cross sections of the $^{28}\mathrm{Si}$($n$,$n$\ensuremath{'})$^{28}\mathrm{Si}$, $^{28}\mathrm{Si}$($n$,$\ensuremath{\alpha}$)$^{25}\mathrm{Mg}$, $^{29}\mathrm{Si}$($n$,$n$\ensuremath{'})$^{29}\mathrm{Si}$, and $^{30}\mathrm{Si}$($n$,$n$\ensuremath{'})$^{30}\mathrm{Si}$ reaction channels are also estimated. The present results are in good agreement with some recent experimental and evaluated results.