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See (1960ZE03, 1961BA1C, 1962GO31, 1969AR13, 1971AR02).

Mass of ¹⁸N: From the Q-value of the ¹⁸O(t, ³He)¹⁸N reaction, M - A for ¹⁸N is 13.274 ± 0.030 MeV (1969ST07).

1. 18N(β-)18O

Qm = 14.06

The half-life of ¹⁸N is 0.63 ± 0.03 sec (1964CH19). log ft = 4.88^†. E_β(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 J^π = 0^-, 1^- or 2^- for the ¹⁸N ground state (1964CH19).

2. 18O(n, p)18N

Qm = -13.27

This reaction has been studied at E_n = 19 MeV: see above (1964CH19).

3. 18O(t, 3He)18N	Qm = -14.04
	Q0 = -14.038 ± 0.030 (1969ST07).

At E_t = 22 MeV, ³He groups corresponding to the ground state of ¹⁸N have been observed by (1969ST07).