Abstract
We report high resolution measurements of inelastic electron scattering to all narrow normal-parity states of up to 12.05 MeV, which include states with ( MeV): (6.049), (12.049), (7.117), (6.917), (9.845), (11.52), (6.130), (10.356), and (11.097). The measurements were performed primarily at 90° and 160° and span momentum transfers between 0.6 and 2.6 . Improved line shape fitting techniques have been developed. These are the first electron scattering measurements for the state and of second form-factor maxima for several states. The form factor for excitation of the state is strikingly different from that of the other states and indicates a transition density peaked in the interior. Transition charge densities were extracted from a combined data set that includes earlier electron scattering data renormalized to a recent analysis of elastic scattering from . Comparisons have been made with several structure models, including the Brown-Green model, the weak-coupling model, a 2ħω shell model, and the tetrahedral alpha-cluster model.
- Received 29 April 1985
DOI:https://doi.org/10.1103/PhysRevC.33.755
©1986 American Physical Society