
^{13}Li (1976AJ04)(Not illustrated) ^{13}Li is not observed in the 4.8 GeV proton bombardment of a uranium target: the cross section is ≲ 0.2 μb (1974BO05). ^{13}Li is predicted to have an atomic mass excess of 61.56 MeV: it is then unstable for breakup into ^{12}Li + n and ^{11}Li + 2n by 0.6 and 4.5 MeV, respectively (1974TH01). The modified mass equation leads to a calculated amu of 60.34 MeV: ^{13}Li would then be stable with respect to breakup into ^{12}Li + n by 0.7 MeV, assuming the amu of ^{12}Li to be 52.94 MeV, but would be unstable with respect to ^{11}Li + 2n by 3.3 MeV (1975JE02). See also (1972TH13, 1975BE31).
