Compound Nucleus Contributions in the Differential and Double Differential Cross-Sections for ²⁴Mg(d, pγ)²⁵Mg

Abstract

The examination of published differential and double differential cross section data for the reaction ²⁴Mg(d, pγ)²⁵Mg at 10 MeV shows that the angular distributions can not be reproduced completely by DWBA calculations, particularly at backward angles. This discrepancy may be due to the presence of compound nucleus (CN) contributions. The CN contributions calculated from Hauser-Feshbach theory have been added to the double differential cross sections calculated from DWBA. It has been shown that the fits to the double differential cross sections are markedly improved, like the differential cross sections, by the addition of CN contributions. Moreover the differential cross section of the levels with spin 7/2⁺ and 9/2⁺ and double differential cross sections for 3→0 and 8→3 correlations, which do not show the stripping pattern are close to those predicted by HF calculations. Thus it is possible to account for the strength of the levels, which do not have the obvious direct stripping pattern, simply by CN processes.