Abstract
Evidence has been found for a broad unbound state near 1 MeV excitation in B that is a candidate for the long-disputed mirror of the unbound 1.68 MeV state in Be. Reactions of LiLi were studied with a 60 MeV beam incident on a 240 g/cm LiF target. The breakup fragments from the decay of the reaction products were detected in five Si-Si-CsI telescope detectors and the breakup particles were reconstructed using the technique of resonant particle spectroscopy. It is shown that contrary to a previous study, the is not populated in the reaction Li(Li,)B, but that it is populated via the Li(Li,)B reaction. The sequential decays of B populated the channels Li(g.s.), Li(2.186 MeV), Be, and , with the latter including (B or Be) decay from B. Decays through B are identified and show the presence of the state as a broad asymmetric peak around 0.8–1.0 MeV with MeV.
- Received 16 May 2012
DOI:https://doi.org/10.1103/PhysRevC.86.034330
©2012 American Physical Society