ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The thermal neutron induced charged particle spectroscopy on58, 59, 61Ni (target nuclei) was done at the 87 m thermal neutron curved guide of the Grenoble high flux reactor. In the59Nu(n, α)56Fe reaction two lines showed up corresponding toα-particle transitions to the ground and first excited states in56Fe with σα0=13.1±1.1 b and σα1 =0.188±0.01 b. A value of σγα≦13 mb was obtained for the two-step59Ni(n, γα)56Fe reaction. The technique to unfold theγα-spectrum and to get information on the primary low energyγ-rays is given and the present and our previous data on the143Nd(n, γα)140Ce reaction are analysed. For the59Ni(n, p)59Co reaction p0=1.34±0.18b,σ p1〈0.30 b were determined. The cross-sections for the58Ni(n,α)55Fe and61Ni(n,α)58Fe reactions were σα0≦30 Μb and σα0≦30 Μb respectively; these andσ p1upper limit value are about 20–1500 times lower than the existing data. The other results are compared with the existing data and the differences are explained. The experimental data are compared with the values obtained from the statistical model.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01434292
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