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Charged-particle emission in reactions of Zr 90 with 10-86-MeV protons

1976; American Institute of Physics; Volume: 14; Issue: 1 Linguagem: Inglês

10.1103/physrevc.14.64

1538-4497

Martti V. Kantelo, James J. Hogan,

Astronomical and nuclear sciences

Excitation functions for 12 nuclear reactions of type $^{90}\mathrm{Zr}[(p,(2\ensuremath{-}4)p,(1\ensuremath{-}6)n]$ have been measured for incident proton energies from 10-86 MeV. The complex excitation functions have been decomposed to yield a component due to emission of one or two $\ensuremath{\alpha}$ particles, and a component due to the emission of individual nucleons. Combining the $\ensuremath{\alpha}$ particle portions of the decomposed excitation functions, the excitation energy spectra for those events associated with $\ensuremath{\alpha}$ particle emission have been derived. Having estimated the excitation functions for a few missing reactions, the total probability of emission of seven combinations of charged particles as a function of incident proton energy has been calculated. The implications of the results on the preequilibrium model of nuclear reactions are discussed.NUCLEAR REACTIONS $^{90}\mathrm{Zr}(p,ypxn)$, $y=2\ensuremath{-}4$, $x=1\ensuremath{-}6$, $E=10\ensuremath{-}86$ MeV; measured $\ensuremath{\sigma}(E)$; deduced $\ensuremath{\alpha}$; particle yields, charged-particle emission probabilities. Enriched target.