A search for an isomeric state in the neutron-rich nucleus 19C is reported. The existence of an isomer in the nucleus is predicted by shell model calculations which also predicts the ground-state of the nucleus to be 1/2+. An isomeric transition is however not observed in the present investigation. An estimation of upper limit of isomer ratio in the beam is discussed. Furthermore, the non-observation of an isomer includes the possibility of 19C having a different ground state spin. The 17C and 17B nuclei were also investigated for delayed gamma transitions but do not exhibit any isomeric transition.
- C deduced no isomeric state
- C, B deduced transitions
- Nuclear reactions H, (C,) (C), (B, B′), E=53 MeV/nucleon; measured prompt and delayed E, I
ASJC Scopus subject areas
- Nuclear and High Energy Physics