(See Energy Level Diagrams for 15C)
Muon and neutrino capture and reactions:(1977BA1P).
Pion capture and reactions:(1977BA24).
The half-life of 15C is 2.449 ± 0.005 sec (1979AL23). Transitions have been observed to 15Ng.s. and to the upper of the 5.3 MeV states in 15N which has Jπ = 1/2+. Therefore Jπ(15Cg.s.) = 1/2+ or 3/2+. Weak transitions are observed to 15N*(7.30, 8.31, 8.57, 9.05) (1979AL23): see Table 15.16 (in PDF or PS). See also (1976AJ04) and (1977RI08, 1979AL23; theor.).
At Eα = 65 MeV 15C*(0.74, 6.74, 7.35) are strongly populated. The angular distribution to 15C*(6.74 + 7.35) is consistent with L = 4 leading to Jπ = 7/2- and 9/2- for these two states on the basis of the (2J + 1) "rule" (1978JA10). See also (1976CE1E, 1976JA13). [However see Table 15.1 (in PDF or PS) for the density of states, and compare with the resolution of (1978JA10).]
See 16N in (1977AJ02).