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The quantification of isotopes content in materials is extremely important inmany research and industrial fields. Accurate determination of boronconcentration is very critical in semiconductor, superconductor and steelindustry, in environmental and medical applications as well as in nuclear andastrophysics research. The detection of B isotopes and of their ratio insynthetic and natural materials may be accomplished by gamma spectroscopy usingthe $^{10}$B(p,$\alpha_1 \gamma$)$^7$Be and $^{11}$B(p,$\gamma$)$^{12}$Creactions at low proton energy. Here, the $^{10}$B(p,$\alpha_1 \gamma$)$^7$Becross section is reported in the center of mass energy range 0.35 to 1.8 MeV.The $E_\gamma$= 429 keV $\gamma$ rays were detected at 45$^\circ$ and90$^\circ$ using a NaI(Tl) and an HPGe detectors, respectively. In thepresented energy range, previous cross sections data revealed discrepancies andnormalisation issues. Existing data are compared to the new absolutemeasurement and discussed. The present data have been subtracted from aprevious measurement of the total cross section to derive the contribution ofthe $\alpha_0$ channel.

A new study of the $^{10}$B(p,$\alpha_1 \gamma$)$^{7}$Be reaction from 0.35 to 1.8 MeV