Enhancement of the near-side component in quasiadiabatic calculations of the 66Zn(d,p)67Zn reaction.

Abstract

Measurements of the spin dependence of large l, j = l — —, ', transfer reactions at medium energies provide a stringent test of three-body reaction models. We report measurements of the cross section (da/d Q), vector ( A~ ) and tensor ( A» ) analyzing powers, and outgoing proton polarization (p) angular distributions (8, =6.9'-82. 3') for the l= 3, j= 2 ground-state transition in Zn(d, p) Zn measured with 88.2-MeV deuterons. Adiabatic model calculations fail to describe either interference oscillations in the data or departures from the simple theoretical relationships, 1+3p +23» =0 and 2+ Ayy+3Ay 0, that are expected to hold for a far-side — dominated reaction. The quasiadiabatic model, in which the center-of-mass energy in breakup configurations is not constrained to be degenerate with the elastic channel, is able to reproduce qualitatively these features of the data.