Eur. Phys. J. A (2020) 56: 221
https://doi.org/10.1140/epja/s10050-020-00227-4

Regular Article - Experimental Physics

Comprehensive measurements of cross sections and spin observables of the three-body break-up channel in deuteron-deuteron scattering at 65 MeV/nucleon

¹ KVI-CART, University of Groningen, Groningen, The Netherlands
² Department of Physics, University of Tehran, Tehran, Iran
³ Institute of Theoretical Physics and Astronomy, Vilnius University, Vilnius, Lithuania
⁴ Department of Physics, School of Science, Yazd University, Yazd, Iran
⁵ Institute of Physics, Jagiellonian University, Kraków, Poland
⁶ Institute of Nuclear Physics, PAS, Kraków, Poland
⁷ Department of Physics, University of Sistan and Baluchestan, Zahedan, Iran
⁸ Department of Physics, Faculty of Science, University of Kashan, Kashan, Iran
⁹ Institute of Physics, University of Silesia, Chorzow, Poland

^* e-mail: reza_ramazani@ut.ac.ir

Received: 5 May 2020
Accepted: 17 August 2020
Published online: 3 September 2020

Abstract

Detailed measurements of five-fold differential cross sections and a rich set of vector and tensor analyzing powers of the break-up process using polarized deuteron-beam energy of 65 MeV/nucleon with a liquid-deuterium target are presented. The experiment was conducted at the AGOR facility at KVI using the BINA 4-detection system. We discuss the analysis procedure including a thorough study of the systematic uncertainties. The results can be used to examine upcoming state-of-the-art calculations in the four-nucleon scattering domain, and will, thereby, provide further insights into the dynamics of three- and four-nucleon forces in few-nucleon systems. The results of coplanar configurations are compared with the results of recent theoretical calculations based on the Single-Scattering Approximation (SSA). Through these comparisons, the validity of SSA approximation is investigated in the Quasi-Free (QF) region.