B-delayed particle studies of the halo nucleus 11Li and its core 9Li

摘要

The -decay of 11Li and its core 9Li has been revisited with the aim to disentangle the very complex decays from unbound states in the daughters. The decay channels for the states fed by -decay in 9Be are established including the 2.43 MeV state for which the analysis of and n spectra seem to favour direct break-up of the level. For the decay of 11Li the -delayed charged particle spectrum can be explained by the contribution of the 10.6 and 18.2 MeV states. The correlations indicates that decay through resonant He-isotopes are more likely than phase space distributed 5-body break-up.