C13(d,n)N14andO18(d,n)F19Differential Cross Sections at 3.9-MeV Bombarding Energy

Abstract

The ${\mathrm{C}}^{13}(d,n){\mathrm{N}}^{14}$ reaction has been restudied with the purpose of obtaining absolute differential cross sections. The intention has been to extract stripping reduced widths for the four lowest energy levels in ${\mathrm{N}}^{14}$ and to investigate an anomalous angular distribution from previous work on this reaction. A table of ${\ensuremath{\theta}}^{2}$, the reduced widths for stripping, is given along with a brief discussion of the consistency of the ${\mathrm{N}}^{14}$ shell-model assignments with the stripping analysis. The second experiment reported in this paper on the ${\mathrm{O}}^{18}(d,n){\mathrm{F}}^{19}$ reaction was based on the suggestion that neutrons which leave ${\mathrm{F}}^{19}$ in its 2.78-MeV level might be undergoing spin-flip stripping. A more strongly forward angular distribution than an ${L}_{p}=2$ distribution was found; this ${L}_{p}$ value had been suggested if the 2.78-MeV level had a 7/2+ assignment and spin-flip stripping is an important mechanism. Since the experiment was completed, evidence has appeared which favors a low spin value for the 2.78-MeV level and invalidates the reaction as an indicator of the spin-flip mechanism.