The shape, width, and location of the 16-MeV resonances in the $\alpha$-particle energy spectrum from the ${\mathrm{Li}}^6({\mathrm{Li}}^6, \alpha ){\mathrm{Be}}^8$ reaction were found to be a function of the angle taken by the breakup fragments in the subsequent decay of the ${\mathrm{Be}}^8$. This was caused by the long-range electrostatic interaction between the $\alpha$ particle and the breakup particles.

• Received 13 June 1969

DOI:https://doi.org/10.1103/PhysRev.187.1302