Abstract
The energy spectra of particles were measured at 5° lab for the reaction using a 20-MeV beam; at 5° and 8° lab for the reaction ; and at 5°, 8°, and 10° lab for the reaction using a 22-MeV triton beam. The 5° lab spectra corresponding to low relative energy in the unobserved two-nucleon system were well fitted with Watson-Migdal final-state-interaction theory for the following scattering lengths: F, F, and F. Analyzing the change-symmetric reactions with the comparison method and using the accepted value for , we find F. When compared with Coulomb-corrected values of , these values of imply that nucleon-nucleon forces are charge-symmetric to better than 1%. In obtaining the scattering lengths, the effective range was fixed at F. Allowing both the effective range and scattering length to vary in the fitting procedure for the final-state data, we find F and F. If the scattering length is fixed at the value - 17.0 F, our data determine the effective range to be F.
- Received 12 December 1969
DOI:https://doi.org/10.1103/PhysRevC.1.1365
©1970 American Physical Society