Investigation of Deuteron Disintegration

The Krakow-Katowice-KVI Few-Body Collaboration has provided large database of the cross sections and analyzing powers in the sector of three-nucleon (3N) systems. In this work, taking a step forward into the system composed of four nucleons (4N), the experiment was performed with the BINA detector at KVI Groningen. The data were obtained in deuteron-deuteron collisions at 160 MeV energy. The data were firstly preanalyzed, then the energy calibration, particle identification and track reconstructions procedures were performed. Various two- and three-body channels were identified. For the first time a detailed analysis of the data collected in the ball — the backward part of the BINA — was performed with respect to energy and angular resolution and detection efficiency. The three body dd→dpn breakup reaction was extensively studied in the forward part of BINA. The differential cross section of the breakup reactions were obtained within the quasi-free scattering (QFS) region for about 150 angular configurations. The results have been compared to the very first calculations based on the CDBonn+∆ potential in a single-scattering approximation (SSA). Shape of the cross-section distributions for φdp=160◦ and φdp=180◦ is quite well reproduced by the theoretical predictions. The results , significantly enriching the 4N database, are very important for the development of theoretical description of the 4N systems dynamics.