Multi-probe study of excited states in ${}^{12}\mathrm{C}$: disentangling the sources of monopole strength between the Hoyle state and $E_x=13$ MeV

K. C. W. Li, F. D. Smit, P. Adsley +24

Knowledge of the low-lying monopole strength in ${}^{12}\mathrm{C}$, the Hoyle state in particular, is crucial for our understanding of both the astrophysically important $3\alpha$ reacti…