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Table 7

Evaluated nuclear data files and new resonance parameters in agreement with the nuclear data adjustment trends provided by our Integral Data Assimilation study.

Fitted nuclear data IDA results Recommended evaluation or resonance parameters Comments
236U(n,γ) +2.2 ± 1.9% JENDL-4.0 JENDL-4.0 suggests an increase of +2% of the capture resonance integral.
242Pu(n,γ) +3.8 ± 2.8% Resonance parameters from reference [29] Recent time-of-flight measurements carried out at the n_TOF facility propose an increase of about +4% of the capture resonance integral.
240Pu(n,γ) +4.2 ± 2.8% Resonance parameters from reference [39] Recent resonance analysis suggests a slight increase of about +0.6% of the capture area of the 1st resonance.
238U(n,2n) +4.8 ± 2.0% JEFF-3.3 [38] JEFF-3.3 suggests an increase of about +3%.
243Am(n,γ) +9.4 ± 2.2% Resonance parameters from reference [30] As discussed in Section 5, the obtained trend seems to be too high.
241Am(n,γ) +10.7 ± 4.7% JEFF-3.3 [38] (taken from JEFF-3.2) The capture cross section was already improved in the JEFF-3.2 library.
153Eu(n,γ) +5.1 ± 2.4% Resonance parameters from reference [31] Resonance parameters extracted from RPI data are in agreement with our study.
Possible improvements were already addressed in a previous study [9].
103Rh(n,γ) +7.4 ± 4.7% Resonance parameters from reference [35] New resonance analysis, performed at IRSN Fontenay aux Roses, suggests an increase of +11% of the capture resonance integral, which is consistent with our results.
154Eu(n,γ) +8.4 ± 3.7% JEFF-3.0 The analysis from reference [40] suggests to use the resonance parameters of JEFF-3.0

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