(See the Isobar Diagram for 18N)
The half-life of 18N is 0.63 ± 0.03 sec (1964CH19). log ft = 4.88†. Eβ(max) = 9.4 ± 0.4 MeV. The decay is to 18O*(4.45), whose subsequent γ-decay has been studied using β-γ coincidences: see 18O. The allowed nature of the decay to the 1- state at 4.45 MeV leads to Jπ = 0-, 1- or 2- for the 18N ground state (1964CH19).
† B.A. Zimmerman, private communication.
This reaction has been studied at En = 19 MeV: see above (1964CH19).
At Et = 22 MeV, 3He groups corresponding to the ground state of 18N have been observed by (1969ST07).