(See the Isobar Diagram for 18N)
Mass of 18N:The atomic mass excess derived from the Q-value of the 18O(7Li, 7Be)18N reaction is 13.117 ± 0.020 MeV (1983PU01). 18N is then stable with respect to breakup into 17N + n by 2.825 MeV. See (1983AJ01) for the earlier work.
The half-life of 18N is 0.624 ± 0.012 sec (1982OL01). The decay branches are displayed in Table 18.9 (in PDF or PS). The nature of the decay leads to Jπ = 1- for the 18N ground state (1982OL01). See also (1983SN03).
The work described in (1983AJ01) has not been published.
At E(18O) = 92.2 MeV groups are observed to the ground state of 18N (unresolved) and to an excited state at Ex = 575 ± 25 keV (1980NA14).