Cross sections of the Zn67(n,α)64Ni reaction at 4.0, 5.0, and 6.0 MeV
Abstract
Experimental cross section data of the Zn67(n,α)64Ni reaction are very scanty because the residual nucleus Ni64 is stable and the commonly used activation method is not feasible. As a result, very large deviations (about 10 times) exist among different nuclear data libraries. In the present work, cross sections of the partial Zn67(n,α0)64Ni and total Zn67(n,α)64Ni reactions are measured at neutron energies of 4.0 and 5.0 MeV for the first time, and those of 6.0 MeV are remeasured for consistency checking. A twin-gridded ionization chamber was used as the charged-particle detector and two enriched back-to-back-set Zn67 samples were adopted. Experiments were performed at the 4.5 MV Van de Graaff Accelerator of Peking University. Neutrons were produced through the H2(d,n)3He reaction using a deuterium gas target. Absolute neutron flux was determined by counting the fission fragments from a U238 sample placed inside the gridded ionization chamber while a BF3 long counter was employed as neutron flux monitor. Present data are compared with results of previous measurements, evaluations, and talys code calculations.
- Publication:
-
Physical Review C
- Pub Date:
- November 2010
- DOI:
- 10.1103/PhysRevC.82.054619
- Bibcode:
- 2010PhRvC..82e4619Z
- Keywords:
-
- 28.20.-v;
- 25.40.-h;
- 24.10.-i;
- Neutron physics;
- Nucleon-induced reactions;
- Nuclear reaction models and methods