On the precompound emission of light particles

The excitation functions known from the literature for α-, 3He- and deuteron-induced reactions on 181Ta and 197Au at energies up to 100 MeV were compared with the predictions of the precompound emission hybrid model. The calculations describe the experimental data in a sufficient way. The precompound emission explains especially the high-energy tails of the (particle,xn) excitation functions and the height of the (particle,pxn) cross sections. At the Bonn isochroneous cyclotron the spectra of the charged particles (p, d, t, 3He, α) from the decay of 65Zn* were measured. The nucleus 65Zn* was produced at the same excitation function of 37.4 MeV in three different ways: (63Cu+d, 62Ni+3He, 61Ni+). (orig./AK)