Abstract
Inelastic electron scattering from the low-lying even-parity states of has been performed. The measurements span a range in momentum transfer from 0.6 to 2.7 . Form factors have been determined for the two lowest excitations, the three lowest excitations, and the three lowest excitations. Transition densities for the and excitations have been obtained from a Fourier-Bessel analysis of these data. Comparisons were made with the predictions of various theoretical calculations and the agreement was found generally to be poor. A coexistence model was used to decompose the measured form factors into their single-particle and collective components, which in turn were compared with their counterparts in and . The results indicate that this model provides a useful framework within which to understand the structure of the oxygen isotopes. Transition densities also were obtained within the context of this model.
NUCLEAR REACTIONS (,) low-lying even-parity excited states; measured form factors at 90° and 160°, ; comparison to shell and coexistence models; transition densities extracted.
- Received 4 December 1981
DOI:https://doi.org/10.1103/PhysRevC.25.1778
©1982 American Physical Society