Collective states of 3He clusters.
The monopole (L=0) and quadrupole (L=2) strength distributions in normal 3 He clusters are calculated within the random-phase approximation. We use a phenomenological, zero-range 3 He- 3 He interaction to generate the Hartree-Fock single-particle spectrum and the residual particle-hole interaction. The evolution or the collective modes with the number or atoms in the cluster is discussed