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13Be (1986AJ01)(Not illustrated) 13Be is reported in the 14C(7Li, 8B) reaction at E(7Li) = 82 MeV: the atomic mass excess of 13Be is 35.0 ± 0.5 MeV. It is then unstable with respect to breakup into 12Be + n by 1.9 MeV (1983AL20). See also (1981AJ01), (1984BE1C) and (1981SE06, 1982KA1D, 1983ANZQ, 1984VA06; theor.).
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