21MeV AlphaParticle Scattering on A=5864 Targets
Abstract
Cross sections for 21MeV α elastic and inelastic scattering to the first 2+ level were measured at 3° intervals between 30° and 166° for ^{58}Fe, ^{58}Ni, ^{62}Ni, ^{64}Ni, and ^{64}Zn. Both the elastic and inelastic scattering data exhibit welldefined oscillations which obey the Blair phase rule throughout the angular range. Opticalmodel fits to the elastic scattering data were found at intervals corresponding to the halfwavelength rule for a wide range of realwell depth. Analysis of the data indicates that the scattering is concentrated in the nuclear surface but is also sensitive to the interior of the nuclear potential. Distortedwave calculations of the inelastic angular distributions with parameters obtained from opticalmodel analysis of the inelastic scattering data gave good agreement with the data in the forward hemisphere, although good agreement was not generally obtained at large angles, where the inelastic scattering cross sections are comparable to the elastic scattering cross sections. Comparison of the inelastic data with distortedwave calculations does not remove the ambiguity of the opticalmodel potential.
 Publication:

Physical Review
 Pub Date:
 January 1968
 DOI:
 10.1103/PhysRev.165.1218
 Bibcode:
 1968PhRv..165.1218F