LowEnergy NeutronOxygen Scattering Derived from TwoBody Forces
Abstract
Lowenergy n^{16}O elastic scattering phase shifts are calculated from potential matrix elements using nuclearreaction theory. As in boundstate calculations, it is found to be essential to include secondorder contributions. When this is done the theoretical calculations which contain essentially no adjustable parameters reproduce the experimental phase shifts reasonably well, the disagreement between theory and experiment being generally no larger than the spread in the theoretical results produced by different twobody forces. A nonlocality of the optical potential arises naturally out of the calculation. We are able to see the effect of this by comparing the internal wave function to that obtained using a WoodsSaxon well with parameters adjusted to give the same phase shift, i.e., we can investigate the Perey effect. The scattering wave function is found to be about 30 to 50% smaller in the potential region than the corresponding wave function calculated from the WoodsSaxon well.
 Publication:

Physical Review C
 Pub Date:
 February 1971
 DOI:
 10.1103/PhysRevC.3.460
 Bibcode:
 1971PhRvC...3..460M