Resonance neutron capture in 60Ni below 450 keV

Details Resonance neutron capture in 60Ni below 450 keV Resonance neutron capture in 60Ni below 450 keV

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002nupha.697..581c&link_type=abstract

Nuclear Physics A, Volume 697, Issue 3-4, p. 581-610.

Physics

Nuclear Physics

6

Scientific paper

High-resolution neutron capture cross-section measurements on 60Ni have been performed at the Geel Linear Accelerator in the energy range from 1 to 450 keV. An experimentally determined weighting function, obtained by a total energy detection set-up, has been applied to the measured capture spectra. The parameters of 275 resonances have been determined in a recent reanalysis using the FANAC /R-matrix shape fitting code. Accurate values of the maxwellian-averaged capture cross section for stellar temperatures ranging from /kT=5 to 100 keV, corresponding to different scenarios of s-process stellar nucleosynthesis, have been calculated. The distributions of partial radiative widths for s- and p-wave resonances have been derived. A correlation of 0.64 between capture and reduced neutron widths is compatible with the presence of nonstatistical effects in the capture of 60Ni.

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