Abstract
The \( \beta\) -delayed 8 Li + t branch of the 11Li decay was identified via kinematical analysis of the charged particles observed in coincidence. The back-to-back events observed in a narrow angular acceptance were compared to a Monte Carlo simulation. The 8 Li + t sum energy spectrum was fitted assuming that the decay occurs through an intermediate state in 11Be . The resulting energy centroid and full-width half maximum for the intermediate state are 18.35(30)MeV and 1.5(4)MeV, respectively. The \( \beta\) -delayed 8 Li + t branching ratio obtained from the coincidence spectrum, BR t = 0.93(8)×10-4 , is in agreement with previous measurements but more precise.
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Madurga, M., Borge, M.J.G., Alcorta, M. et al. Kinematic identification of the \( \beta\)t branch in the decay of 11Li. Eur. Phys. J. A 42, 415–419 (2009). https://doi.org/10.1140/epja/i2008-10769-0
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DOI: https://doi.org/10.1140/epja/i2008-10769-0