Determination of nuclear constants of reactions induced on zinc by short irradiations with the epithermal and fast components of a reactor neutron spectrum

Abstract

SummaryCross sections, averaged over a235U fission neutron spectrum, of some threshold reactions induced on zinc after short irradiations, have been measured. The studied reactions and the corresponding values are:64Zn(n,p)64Cu, (37.4 ± 1.4) mb;64Zn(n, 2n)63Zn, (23.4 ± 2.0) μb;66Zn(n,p)66Cu, (0.775 ± 0.079) mb;68Zn(n,p)68mCu, (5.32 ± 0.65) μb; and68Zn(n, α)65Ni, (52.1 ± 2.3) μb, all referred to the cross section of the27Al(n,p)27Mg standard reaction, (3.84 ± 0.18) mb. Working values for the resonance integrals of the reactions70Zn(n, γ)71Zn and70Zn(n, γ)71mZn, referred to the tabulated value for the resonance integral of the68Zn(n, γ)69mZn reaction, (0.24 ± 0.03) b, were also obtained. The results were (0.1350 ± 0.0093) b and (0.157 ± 0.029) b, respectively.