The even isobars of mass

The r = 0 levels shown at 4.52 and 5.4 MeV are also obtained from (doc) scattering experiments. The reduced widths of the levels seen in (doc) scattering are all comparable with the single particle value. This suggests that the structure of Li is not greatly dissimilar from that of an alpha particle with an orbital deuteron. 

The energy levels of He are found from the ( a) and (dHe ) reactions the latter indicates a change of parity between Li and the ground state and first 

The decay of He to the ground state of Li is superallowed and is the most important evidence for the Gamow-Teller type of coupling in beta-decay. The Fermi allowed decay which would be expected from He to its isobar state at 3.57 MeV in Li is just energetically impossible. No trace of gamma radiation in the He decay has been found, nor has any transition to the 2.189 MeV level (/ = 3 ) been seen. 

Tauber and Wu show that the magnetic moment of Li , calculated with the intermediate coupling parameter which best fits the level spectrum, is in better agreement with observation than that obtained from pure jj coupling. The multiplet splittings in Li can be accounted for, at least qualitatively, by the introduction of a tensor force component into the main interaction between nucleons instead of a spin-orbit force. 

The bound states of B have been obtained from the dn), doi), [pp ), dd ) and [nn ) reactions, by the decay of C , and from cascades observed in the py) reaction. Virtual levels near the alpha particle dissociation energy are studied 

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