Consistent description of light composite particle emission in deuteron-induced reactions

The weakly bound nature of the deuteron brings the complexity of deuteron-induced reactions compared to nucleon-induced ones and is expected to affect various physical quantities observed in deuteron-induced reactions. Aiming to deep understanding and accurate prediction for the emission of light composite particle (LCP) in deuteron-induced reactions, we revise the computational system dedicated to deuteron-induced reactions, called DEURACS. The model by Iwamoto and Harada describing pre-equilibrium cluster emission which was successfully applied to LCP emission in nucleon-induced reactions is integrated into the framework of DEURACS, in which the breakup processes of incident deuteron are explicitly taken into account. The phenomenological model by Kalbach is also adopted to estimate the contribution from the direct pickup process. Using the revised DEURACS, we analyze the (d,xt), (d,xHe3), and (d,xα) reactions in the target mass range 27≤A≤90. Regardless of the targets, the calculation results successfully reproduced the experimental data for each reaction, simultaneously. These results demonstrate that the LCP emission from the pre-equilibrium and compound nucleus processes in deuteron-induced reactions, which occupies a large part of the total LCP emission, can be described by the same theoretical models as used in nucleon-induced reactions when the breakup processes of incident deuteron are properly considered.