Spin inhibition in γ-decay probabilities for states above above the neutron separation energy

Published: March 2022 Simon-Robertson

Lead Author(s): C.S. Reingold

Spin inhibition is the effect where a system is blocked from decay via neutron emission due to angular momentum conservation. If the excited nucleus is in a high-spin state, but does not have enough excitation energy to conserve angular momentum by either photon emission after neutron emission or relative angular momentum carried off by the neutron, the nucleus cannot undergo de-excitation through the neutron emission channel. Thus the de-excitation proceeds via γ-ray emission. Thus, the competition between neutron and γ -ray emission from high-spin states above the Sn carries information about the structure of the compound nucleus formed during the reaction and is key for the correct description of the system, for example in the surrogate method approach.  Learn more

Publication: Spin inhibition in γ-decay probabilities for states above Sn in Sm and Dy nuclei