(d, t) Reactions on Nuclei withA≈60

Abstract

Energy spectra of tritons from the ($d, t$) reactions on a number of nuclei with masses between $A=51\mathrm{}$ and $A=68\mathrm{}$ have been obtained at a deuteron energy of 21.5 Mev. The experiment was performed in the 60-in. scattering chamber, a double NaI crystal system being used for particle identification. The absolute differential cross sections were obtained at 27° (lab) and angular distributions of various triton groups were taken over a range of angles from 7° to 70°. The angular distributions exhibit an oscillatory behavior and have been fitted with the Butler theory for neutron pickup. The angular distributions observed in the ($d, t$) reactions on ${\mathrm{V}}^{51}$ and ${\mathrm{Cr}}^{52}$ correspond to $l=3\mathrm{}$ transitions, while in the case of the other nuclei studied (${\mathrm{Mn}}^{55}$, ${\mathrm{Fe}}^{56}$, ${\mathrm{Fe}}^{57}$, ${\mathrm{Co}}^{59}$, ${\mathrm{Cu}}^{63}$, ${\mathrm{Cu}}^{65}$, ${\mathrm{Zn}}^{64}$, ${\mathrm{Zn}}^{66}$, ${\mathrm{Zn}}^{67}$, and ${\mathrm{Zn}}^{68}$) both $l=1\mathrm{}$ and $l=3\mathrm{}$ transitions have been observed. Evidence for the mixing of shell-model configurations is presented. The Butler formalism and empirically determined constants have been used to extract reduced widths.