Information on mass chains and nuclides available on this website:

WWW TUNL

The ¹⁴N(³He, ⁶He)¹¹N reaction has been studied at E(³He) = 70 MeV. A ⁶He group is observed which corresponds to a state in ¹¹N with an atomic mass excess of 25.23 ± 0.10 MeV and Γ = 740 ± 100 keV. The cross section for forming this state is 0.5 μb/sr at 10°. The observed state is interpreted as being the J^π = 1/2^- mirror of ¹¹Be*(0.32) because of its width; the 1/2⁺ mirror of ¹¹Be_g.s. would be expected to be much broader (BE74B). The ¹¹N state is unbound with respect to decay into ¹⁰C + p by 2.24 MeV. See also (BE75Q, HU75G, IR76C, GU78D, BE79A; theor.) and (DA74L).