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14Be (1976AJ04)
(See the Isobar Diagram for 14Be)
14Be has been observed with a production cross section of ≈ 10 μb in the
4.8 GeV proton bombardment of uranium (1973BO30, 1974BO05). It is particle stable: its atomic
mass excess is calculated to be 40.69 MeV. 14Be is then bound by 2.73 and 0.41 MeV,
respectively, with respect to decay into 13Be + n and 12Be + 2n
(1974TH01). See, however, (1975JE02). 14Be had not been observed in the bombardment of
232Th with 145 MeV 15N ions (1970AR27). See also (1971AR1P, 1973VO1D),
(1973KO1D, 1973TA30) and (1971ST40, 1972TH13, 1975BE31; theor.).