Photo-neutron cross-section of ⁹⁶Zr using bremsstrahlung radiation with end point energies of 10 and 12.5 MeV

Abstract

The 96 Zr( , ) 95 Zr reaction cross-section was experimentally determined at end point bremsstrahlung energies of 10 and 12.5 MeV using off-line -ray spectrometric technique. The cross-section increases sharply from the end point energy of 10 to 12.5 MeV, which indicates the role of excitation energy. The reaction crosssection as a function of photon energy was also calculated theoretically using the TALYS 1.2 computer code. The flux weighted average value of the 96 Zr( , ) 95 Zr reaction cross-section for the end-point bremsstrahlung energies of 10 and 12.5 MeV was also calculated using the experimental and theoretical data of mono-energetic photons to compare with the present data. The cross-section given in the present work at end-point bremsstrahlung energy of 10 MeV is closer to the flux-weighted value of TALYS but higher than the literature data. On the other hand, at 12.5 MeV, it is higher than the flux weighted value of TALYS and the literature data. Keywords: 96 Zr( , ) 95 Zr reaction cross-sections, 197 Au( , ) 196 Au flux monitor, End point bremsstrahlung energy of 10 and 12.5 MeV, Off-line -ray spectrometric technique, TALYS calculation .

The 95Zr(n, γ)96Zr Cross Section from the Surrogate Ratio Method and Its Effect on s-process Nucleosynthesis

“…These data for the reverse reaction were measured with high precision using monochromatic photons from Laser-Compton scattering. Later average cross sections (Crasta et al 2014;Naik et al 2014) from bremsstrahlung are in rough agreement with the monochromatic photon data; because of their larger uncertainties, the bremsstrahlung data were not included in the present χ 2 -based adjustment of the TALYS parameters.…”