Gamma rays from muon capture in 14N

Abstract Many new γ -rays have been observed, following muon capture on 14 N. One had been reported before, and the low yield is confirmed, indicating that the nuclear structure of 14 N is still not understood. Gamma rays from 13 C resulting from the reaction 14 N( μ − , ν n) 13 C compare favourably with states observed in the reaction 14 N( γ , p) 13 C. More precise energies are also given for the 7017 and 6730 keV γ -rays in 14 C.