Some recent developments in interacting boson models

Neutron capture gamma ray spectroscopy has been a very powerful method for the study of nuclear structure. In particular the nucleus 168Er has been studied very precisely and almost complete information has been provided. The author takes 168Er to investigate how far the interacting boson model can go in explaining the structure of 168Er. The necessity of using hexadecapole (g) bosons is pointed out. The author discusses briefly the results of the spdf-boson model obtained by Otsuka and Sugita (1988). Their results are very promising for explaining the structure of actinide nuclei.

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