The inelastic scattering of 21.6-Mev deuterons by Ni, Cu, Zn, Rh, Ag, Sn, Gd, Ta, Pt, and Au has been measured. A NaI(Tl) crystal snadwich was used for the detection of the scattered particles. The calculated energy scale of the spectrum was checked by observing the inelastic spectrum from Mg. The angular distribution shows a pronounced peaking in the forward direction. At background angles there is no increase in cross section with increasing excitation, showing that compound-nucleus processes do not contribute to the cross section. Up to an excitation of 10 Mev, the inelastic scattering cross section for 21.6-Mev deuterons scattered at 60° by Au is not measurably different from that for 22-Mev protons. However, the inelastic deuteron cross sections for Ni, Cu, and Zn are about half of the corresponding 22-Mev proton cross sections at 60°. The gross structure found by Cohen in the inelastic spectrum is also observed in the present experiment. However, the gross structure in Ta and Gd appears to be considerably more pronounced in the deuteron spectrum than in the proton spectrum.

• Received 16 October 1958

DOI:https://doi.org/10.1103/PhysRev.114.815