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Isaac M. Cohen, S. Ribeiro Guevara, M. A. Arribére, María C. Fornaciari Iljadica, A. J. Kestelman, R. A. Ohaco, M. S. Segovia, A. N. Yunes

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

Cross sections, averaged over a ²³⁵U 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; and ⁶⁸Zn(n,α) ⁶⁵Ni, (52.1±2.3) μb, all referred to the cross section of the ²⁷Al(n,p) ²⁷Mg standard reaction, (3.84±0.18) mb. Working values for the resonance integrals of the reactions ⁷⁰Zn(n,γ) ⁷¹Zn and ⁷⁰Zn(n,γ)^71mZn, referred to the tabulated value for the resonance integral of the ⁶⁸Zn(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.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 93, 09/2005
Pages: 543 - 546

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