Angular Correlation of Gamma Rays from Fe⁵⁶

Abstract

The gamma rays emitted in the decay of Co⁵⁶ were studied by gamma-gamma angular correlation measurements. The results of these experiments permitted the discussion of the energy levels of the daughter nucleus, Fe⁵⁶. The gamma-gamma coincidence experiment showed the presence of 2.03-Mev. gamma ray decaying to the second excited level. One part of the decay scheme was confirmed by positron-gamma coincidence experiment. The first and the second excited levels were assigned to be 2+ and 4+ respectively from the special consideration on the angular correlation data. The spins of the other levels were discussed also.