Measurement and resonance analysis of the 33S(n, α) cross section

Measurement of the 33 S(n,α) cross-section at n_TOF(CERN): Applications to BNCT

“…Moreover, the main evaluated nuclear data libraries, 7 such as ENDF/B-VII.1, JEFF-3.1.2, JENDL-4.0, ROSFOND-2010 and JEF-2.2, do not even describe the experimentally found resonant structure. Only EAF-2010 shows the resonances but the values are smaller than those reported by Wagemans et al 3 Within this framework, a new measurement at the n TOF facility at CERN was proposed to clarify the existing discrepancies.…”

“…6 Both experiments showed that the lowestlying and strongest resonance of 33 S(n,␣) cross-section occurs at a neutron energy near 13.5 keV. The discrepancies between the resonance parameters obtained 3,5,6 amounted to a factor of 2, being the results of Wagemans et al 3 the lowest ones. Moreover, the main evaluated nuclear data libraries, 7 such as ENDF/B-VII.1, JEFF-3.1.2, JENDL-4.0, ROSFOND-2010 and JEF-2.2, do not even describe the experimentally found resonant structure.…”

The33S(n,α)30Si cross section measurement at n_TOF-EAR2 (CERN): From 0.01 eV to the resonance region

“…3 shows a comparison of the first resonance (at 13.5 keV) between the present work and Ref. [18] convoluted with the n TOF energy response function [24].…”

“…Only EAF-2010 includes the observed resonances, but with an average cross section value ten times lower than reported in Ref. [18].…”

“…Only one measurement was able to resolve and analyze resonances [18]. However, it showed a factor of two discrepancy in the resonance parameters in comparison to the sole existing transmission measurement [19], although both experiments were analyzed in collaboration.…”