Gamma-ray decay from the analogue state of the Ca g.s.

The γ-decay from three fine-structure components of the ⁴⁹Ca ground state analogue has been investigated. Angular distributions have been measured for the decay from the strongest component. Absolute γ-widths are found from the γ-spectra, and the proton and neutron widths from fits to the ⁴⁸Ca(p, p) and (p, n) excitation functions. A group of eight states with E_x around 7 MeV is found to carry a significant part of the M1 strength. A comparison with the β-decay from ⁴⁹Ca has been made.