Development of a code system DEURACS for theoretical analysis and prediction of deuteron-induced reactions

Abstract

Abstract.We have developed an integrated code system dedicated for theoretical analysis and prediction of deuteron-induced reactions, which is called DEUteron-induced Reaction Analysis Code System (DEURACS). DEURACS consists of several calculation codes based on theoretical models to describe respective reaction mechanisms and it was successfully applied to (d,xp) and (d,xn) reactions. In the present work, the analysis of (d,xn) reactions is extended to higher incident energy up to nearly 100 MeV and also DEURACS is applied to (d,xd) reactions at 80 and 100 MeV. The DEURACS calculations reproduce the experimental doubledifferential cross sections for the (d,xn) and (d,xd) reactions well.

Recent progress of a code system DEURACS toward deuteron nuclear data evaluation

“…As shown in the figure, DEURACS reproduces the experimental data better than the other results (TENDL-2017 and PHITS) especially at the broad peak around half the deuteron incident energy. Together with the results of the previous analyses up to around 100 MeV [7,8], these results demonstrate the applicability of DEURACS to (d, xn) reactions on light nuclei at incident energies up to 200 MeV. However, it should be mentioned that the applicability of the Glauber model gets worse for high-atomic-number nuclei such as 208 Pb and 238 U as mentioned in Ref.…”

“…Until the last conference, ND2016, we have focused on the description of nucleon emission so as to contribute to the design of neutron sources. As a result, DEURACS was successfully applied to the (d, xp) and (d, xn) reactions up to 100 MeV [6][7][8]. In this paper, we review the recent progress in the development of DEURACS after ND2016.…”

Advanced breakup-nucleon enhancement of deuteron-induced reaction cross sections

“…At the same time, DDX data of (d, xd) reactions on 27 Al and 58 Ni at incident energies of 80 and 100 MeV, respectively [44], have been better reproduced than the original PE + CN models due particularly to inclusion of the Kalbach's semi-empirical inelastic scattering model [73]. Energy-dependent formation factors R n (E n ) and R p (E p ), given by the Glauber model [39,40] for the NBU processes, have been also involved in a way rather similar to the above-mentioned BU enhancement based on the convolution of breakup-nucleons energy distributions and the related nucleon-induced reaction excitation functions [56][57][58][59][60].…”

“…Recently, energy-dependent formation factors R n (E n ) and R p (E p ) have been involved in Ref. [44] within the same DEURACS framework, as given by Glauber model [39] for the nonelastic-breakup (NBU, replacing the authors' former notation STR). The related analysis of DDX data for (d, xn) reactions on 9 Be and 12 C, at incident energy of 102 MeV, has proved the applicability of DEURACS to the (d, xn) reactions on light nuclei at incident energies around 100 MeV, as well as the essential NBU role of for accurate predictions.…”

“…[45]. The above-mentioned underestimation below a few MeV, which was attributed to an absent particle-decay from discrete levels in residual light nuclei [43,44], has also been amended.…”