The beta decay of 9Li to levels in 9Be: A new look
作者： Göran Nyman , RE Azuma , PG Hansen , Björn Jonson , PO Larsson
DOI: 10.1016/0375-9474(90)90236-F
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摘要: Beta-delayed neutrons and alpha particles from the decay of 9Li have been studied with a 3He neutron spectrometer silicon surface barrier detectors. The data show that (50 ± 3)% feeding to particle unbound states mainly proceeds four excited in 9Be at 2.43 MeV (30 3)%, 2.78 (16 11.28 11.81 (3.8 0.2)%. strong state observed corresponds log ft value 2.84. beta-decay rates are strongly affected by broad levels populated decay. Corrections involving R-matrix calculations applied for extraction reduced transition probabilities. We confirm recently determined asymmetry beta decays case32− ground 9C case52− daughters 9B 9Be.
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