Aiming for a better understanding of the ${}^{27}\mathrm{Al}(\alpha ,n){}^{30}\mathrm{P}$ reaction, new cross-section measurements for this reaction have been carried out using ${}^{27}\mathrm{Al}$ targets of thicknesses 20 $\mu {\mathrm{g}/\mathrm{cm}}^2$ and 63 $\mu {\mathrm{g}/\mathrm{cm}}^2$ for $\alpha$-energy range of 2.5–5.2 MeV and 3.4–5.2 MeV, respectively. An array of twenty-eight ${}^3\mathrm{He}$ counters, providing high and almost flat neutron-detection efficiency up to about 3 MeV neutron energy, has been used for the experiment. The amount of ${}^{13}\mathrm{C}$ contamination in the ${}^{27}\mathrm{Al}$ target and its effect on the measured total neutron cross sections has also been reported. The measured cross sections have been interpreted using the dynamical cluster-decay model and the compound Hauser-Feshbach model.

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• H & He induced nuclear reactions
• Nuclear reactions
• Transfer reactions
• 20 ≤ A ≤ 38