Surface-Delta-Interaction Model for Nuclear Structure Analyzed by Proton Inelastic Scattering
- 20 July 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 159 (4), 846-852
- https://doi.org/10.1103/PhysRev.159.846
Abstract
Differential cross sections and polarizations for 17.8-MeV protons scattered by nickel isotopes have been calculated by solving the coupled equations. The nuclear states were described in terms of their microscopic composition in the two-quasiparticle approximation. Two such model calculations were used. The effect of the presence of pure "two-phonon" states was investigated by generating them from the collective operator for the state. The effects of the spin-flip term in the direct interaction were included. Comparison of the results with experiments suggests that, except for the collective state, the two-quasiparticle method is inadequate for treating nuclear states. The vibrational treatment also fails. A much more elaborate structure calculation which treats the mixing between the two-quasiparticle and the "two-phonon" configurations is suggested.
Keywords
This publication has 25 references indexed in Scilit:
- Surface Delta Interaction in Deformed NucleiPhysical Review B, 1967
- The surface delta interaction and excitations in closed shell nucleiNuclear Physics, 1966
- A comparison of the effective two-nucleon interaction in 2sPhysics Letters, 1966
- Surface Delta Interaction and Single-Closed-Shell NucleiPhysical Review B, 1966
- Energy Gap in Finite Nuclear SystemsPhysical Review B, 1966
- Nuclear Coupling Schemes with a Surface Delta InteractionPhysical Review B, 1965
- Quasi-particules en interaction et modele vibrationnel dans les isotopes du nickelPhysics Letters, 1964
- Theory of Direct-Interaction Inelastic ScatteringPhysical Review B, 1959
- Direct interaction theory of inelastic scattering: Part III. Numerical calculationsAnnals of Physics, 1958
- Direct interaction theory of inelastic scattering. Part IAnnals of Physics, 1957