ALPHA-PLUS-SI-28 CLUSTER STRUCTURE AS SOLITONS ON THE NUCLEAR-SURFACE

More than a hundred fragments of alpha-cluster states in S-32 With spi ns from 3 (h) over bar to 10 (h) over bar have been observed in elasti c alpha-particle scattering from Si-28. The energy spectra are investi gated in terms of a nonlinear Lagrangian, associated with the dynamics of the system, which adds a new collective motion to the well known r otational and vibrational motions in nuclei. The present model not onl y reproduces the observed levels but predicts also the positions and s pins of other levels for both even and odd parities.