Verification of R-matrix calculations for charged-particle reactions in the resolved resonance region for the Be system

Thompson, I. J.*; deBoer, R. J.*; Dimitriou, P.*; Kunieda, Satoshi  ; Pigni, M. T.*; Arbanas, G.*; Leeb, H.*; Srdinko, Th.*; Hale, G.*; Tamagno, P.*; Archier, P.*

In this paper we present, for the first time, the results of a comprehensive effort to verify the most widely used R-matrix codes in the various fields of nuclear science and applications: AMUR, AZURE2, CONRAD, EDA, FRESCO, GECCCOS, and SAMMY. In addition to the description of the capabilities of the codes and their specifications, we discuss the results of a joint exercise which was coordinated by the International Atomic Energy Agency. The aim of the exercise was to compare calculations of charged-particle reaction cross sections for the light composite system Be. The calculations were performed by the codes using identical input R-matrix parameters and other specifications and were limited to charged-particle channels.