Excitation function measurements of 12C(4He,8Be)8Be, 12C(4He,12C[7.65, 0+])4He, and 12C(4He,12C[9.64, 3−])4He reactions

In the present measurements a ${}^{12}$C target was bombarded by a ${}^{4}$He beam with energies from 14 to 21 MeV and the excitation function measurements for the reactions of the ${}^{12}$C$({}^{4}$He, ${}^{8}$Be)${}^{8}$Be, ${}^{12}$C(${}^{4}$He, ${}^{12}$C$[7.65,{0}^{+}]$)${}^{4}$He, and ${}^{12}$C(${}^{4}$He, ${}^{12}$C$[9.64,{3}^{\ensuremath{-}}]$)${}^{4}$He were obtained using an array of 6 double-sided silicon strip detectors. The excitation functions are used to gain an insight into possible $\ensuremath{\alpha}$-cluster structures in ${}^{16}$O.