On Alpha-decay and Alpha Clustering
Doctoral thesis, 1988
The half-life for the Alpha-decay of 212 Po is calculated within a harmonic oscillator representation. Clustering induced by the nuclear interaction appear by considering a
large configuration space. The role of clusterisation in the alpha-decay process is
clearly demonstrated. It was shown that as soon as four-particle cluster is formed
on the surface of the nucleus a broad region appears in which the ratio between
theoretical half-lives and experimental ones is independent on the channel radius.
That is the important result itself which indicates that the old problem of strong
dependence of alpha-decay widths on arbitrary parameter of channel radius can
be solved by describing the alpha-decay as the disintegration of the initial state
in which alpha clustering occurs. The role of proton-neutron interaction proved to be decisive in the formation of the stable four-particle cluster.