Current stage of studies of the star configurations at intermediate energies with the use of the BINA detector

cd autorów: Kazimierz Bodek, Izabela Ciepał, Mohammad Eslami-Kalantari, Nasser Kalantar-Nayestanaki, Ghanshyambhai Khatri, Stanisław Kistryn, Adam Kozela, Joanna Kuboś, Paweł Kulessa, Andrzej Magiera, Hossein Mardanpour, Johan Messchendorp, Indranil Mazumdar, Wiktor Parol, Ahmad Ramazani-Moghaddam-Arani, Dagmara Rozpędzik, Izabela Skwira-Chalot, Bogusław Włoch, Aleksandra Wrońska, Jacek ZejmaThe Space Star Anomaly in proton-deuteron breakup cross-section occurs at energies of about 10 MeV. Data for higher energies are sparse. Therefore, a systematic scan over star configurations in the range of intermediate energies between 50 and 100 MeV/nucleon is carried out on the basis of data collected with the large acceptance BINA detector. The preliminary cross section results for forward star configurations at 80 MeV/nucleon slightly surpass the theoretical calculations, but the systematic uncertainties are still under study. Also, a new variable describing rotation of star configurations is proposed

The forward-plane star in 1H(d, pp)n breakup at Edd=80 MeV/nucleon

Analysis of the data acquired with the BINA detector system in 1H(d, pp)n reaction at the beam energy of 80 MeV/nucleon makes a systematic analysis of the star configurations possible. This paper shows the preliminary cross section of the Forward-Plane Star (FPS) configuration with the neighbouring configurations

Simulation of Star configurations in the BINA detector

Star Anomaly is one of the most intriguing and unsolved discrepancies between theoretical calculations and experimental data observed in the domain of few-nucleon systems at low energies. Previous and upcoming measurements of the breakup reaction with the use of the BINA detector enable systematic studies of the Star configurations at intermediate energies. A dedicated simulation was developed to study feasibility of registering such events with the required accuracy and to support the future data analysis. An additional rotation angle has been introduced to parametrise the Star configurations. First results concerning the acceptance of certain segments of BINA for registering the Star configurations are presented

Experimental studies of few-nucleon systems

Special issue, XLVI Extraordinary Congress of Polish Physicists, Warsaw, Poland, October 16–18, 2020Understanding nuclear interactions is the basis for describing nuclear systems, their structure and reac-tions. Studies of reactions in the simplest systems consisting of a few nucleons provide stringent tests for nuclear interaction models. The data collected by our group over the last 30 years are crucial for un-derstanding the few-nucleon system dynamics. Measurements of observables (cross-section, vector and tensor analyzing powers) for the deuteron breakup in collision with a proton/deuteron were conducted at SIN/PSI (Switzerland), KVI (the Netherlands), FZ-Jülich (Germany) and CCB IFJ PAN Kraków (Poland), and provided data covering a wide range of the reaction phase-space. Main conclusions fol-lowing from our research and its current status are presented

Current stage of studies of the star configurations at intermediate energies with the use of the BINA detector

The Space Star Anomaly in proton-deuteron breakup cross-section occurs at energies of about 10 MeV. Data for higher energies are sparse. Therefore, a systematic scan over star configurations in the range of intermediate energies between 50 and 100 MeV/nucleon is carried out on the basis of data collected with the large acceptance BINA detector. The preliminary cross section results for forward star configurations at 80 MeV/nucleon slightly surpass the theoretical calculations, but the systematic uncertainties are still under study. Also, a new variable describing rotation of star configurations is proposed