Peaks in the zero-degree yield curve of the reaction ${\mathrm{C}}^{12}({\mathrm{Li}}^7,\alpha ){\mathrm{N}}^{15}$ are interpreted as due to resonances in the ${\mathrm{C}}^{12}t\alpha$ system.

• Received 21 May 1970

DOI:https://doi.org/10.1103/PhysRevLett.25.172