(See Energy Level Diagrams for 15C)
Complex reactions involving 15C:(1985PO11, 1986AV1B, 1986BI1A, 1986DU11, 1986HA1P, 1986HA1B, 1986PO06, 1987RI03, 1987SA25, 1987SN01, 1987VI02, 1988CA06, 1988JO1B, 1988MI28, 1988RU01, 1988SA19, 1989AS1B, 1989OG1B, 1989SA10, 1989SI26, 1989YO02).
μg.s. = 1.315 ± 0.07 nm (1989RA17)
μ0.74 = -1.758 ± 0.03 nm (1989RA17)
The half-life of 15C is 2.449 ± 0.005 s (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+. The log ft to 15N*(5.30) indicates an allowed transition: 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 15.14 (in PDF or PS). The shape of the 15Cg.s. → 15Ng.s. transition differs appreciably from an allowed shape (1984WA07). See also (1986AS1B, 1988ASZY), (1988WA1E) and (1989BA92, 1989PO1K; theor.).
σγ < 1 μb (1981MUZQ).
At Epol. d = 16 MeV angular distributions and Ay measurements are reported to a state at Ex = 4.78 ± 0.10 MeV (Γc.m. = 1.74 ± 0.40 MeV); S = 0.5. A narrow state at Ex = 5.81 ± 0.02 MeV (Γc.m. = 64.3 ± 8.1 keV), S = 0.02, is also observed. It is suggested that these are 1p2h and 3p4h 3/2+ states (1985DA23) [and S.E. Darden, private communication]. For the earlier work see 15.2 (in PDF or PS).
Radiative pion capture shows evidence for Jπ = 5/2+, T = 3/2 giant magnetic quadrupole states: transitions are reported to 15C*(0.74) as well as to 15C*(6.7, 8.6, 12.0) (1983ST04).
At E(7Li) = 82 MeV 15C*(0, 3.1) are populated (1985AL1G).