Abstract
A collection of transition matrix elements from pion scattering to natural parity states of spin-zero nuclear targets has been generated from and inelastic scattering, with results for proton, neutron, and isoscalar transitions, using a consistent reaction model and data from many sources. These are compared to electromagnetic results, to isoscalar results from folding analyses of alpha particle scattering, and to neutron matrix elements inferred by a variety of methods. Good agreement is generally found among these determinations. Comparison of neutron to proton matrix elements shows a simple proportionality to the neutron and proton numbers of the target, reflecting a simple bulk symmetry for a wide range of multipolarities, target masses, and transition strengths.
- Received 24 February 1993
DOI:https://doi.org/10.1103/PhysRevC.48.1128
©1993 American Physical Society