Distorted wave analysis of (d,p) reactions to decaying states

Abstract

The distorted-wave Born approximation is used in the case of the stripping reaction S32(d,p)S*33 leading to decaying states in order to explain the strong dependence of the ratio of the energy differential (d,p) stripping cross section to the total neutron elastic scattering cross section on the same target, on transferred angular momentum (l) The necessity of using a distorted-waves approximation instead of a plane-waves approximation, which is much simpler to calculate and which also shows " l dependence," is discussed in the context of identification of levels. The slowly converging overlap integral appearing in the distorted-wave Born approximation is treated by employing a Gaussian convergence factor. It is also found that in the plane-wave calculation, the inclusion of the unscattered part in the neutron form factor affects only the l=0 resonances. The desirability of including the effect of the nuclear interior is discussed. The angular distribution for the reaction O6(d,p)O*17 has been obtained employing the distorted-wave Born approximation method. The spectroscopic factor for this reaction is obtained and compared with that reported previously. NUCLEAR REACTIONS S32(d,p), O16(d,p) reactions, unbound states, calculated [d2σ(d,p)]dΩdE, [dσ(d,p)]dΩ, ED=12-13.3 MeV, DWBA analysis. © 1977 The American Physical Society.