Abstract
This paper deals with the validation of the multiple scattering corrections developed in the CONRAD code for the capture yield calculations in the Resolved Reso- nance energy Range (RRR). In order to calculate the capture yields, analytic and stochas- tic calculation schemes implemented in CONRAD are described and compared with the analysis code SAMMY/SAMSMC. The results are in excellent agreement for a variety of samples. We concentrate the discussion here on 238 U, 197 Au and 55 Mn.
Highlights
CONRAD [1] is dedicated to nuclear reaction cross section evaluation and related variance-covariance matrices from thermal up to the fast energy range
This paper deals with the validation of the multiple scattering corrections developed in the CONRAD code for the capture yield calculations in the Resolved Resonance energy Range (RRR)
Capture yield computations have been performed with CONRAD using analytic and Monte Carlo methods and have been compared with analysis codes like REFIT, SAMMY and SAMSMC
Summary
CONRAD [1] is dedicated to nuclear reaction cross section evaluation and related variance-covariance matrices from thermal up to the fast energy range. The aim of this note is to validate the capture yield calculations in the Resolved Resonance energy Range (RRR). Transmissions and capture yields are compared with the Resonance Shape Analysis codes REFIT [3] and SAMMY/SAMSMC [4]. The nuclear reaction models implemented in the code for the RRR are the Reich-Moore and the Multilevel Breit-Wigner approximations of the R-Matrix theory. The calculation with CONRAD are in perfect agreement with NJOY using the Multilevel Breit-Wigner or the Reich-Moore nuclear reaction model. As a transmission is a trivial functional of the total cross section, its calculation is in excellent agreement and has been checked against REFIT code in Ref.
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