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7B (1966LA04)
(Not illustrated)
From the known location of the 7Be T = 3/2 state, the mass excess of 7B is calculated as 27.99 ± 0.15 MeV (calculation of the Coulomb energy difference based
on the pair 10Be - 10B* (T = 1)); 7B is then unstable with respect to decay into 5Li + 2p by 1.73 MeV, 6Be + p by 2.33 MeV, and a + 3p by 3.70 MeV
(1965DE08). See also
(1960GO1B,
1965JA1C).