70 research outputs found
Possibility of measurement of cross section and vector analyzing powers of p−^{3}He scattering at the Bronowice Cyclotron Center
A new possibility of continuation of few-nucleon dynamics studies at medium energies has appeared together with a new facility at the Institute of Nuclear Physics PAN in Kraków — The Bronowice Cyclotron Center (CCB). The new cyclotron PROTEUS provides a proton beam in an energy range of 70–230 MeV. Current progress in the theoretical calculations for four-nucleon (4N) systems is a main motivation to investigate p−^{3}He scattering. Due to the fact that the beam cannot be polarized, the only possibility to study spin observables is to build a polarized ^{3}He target system. A planned experiment assumes the construction of a cylindrical double Pyrex cell with separated pumping and target chambers with an additional polyamide film covering apertures for the passing beam and the reaction products. To polarize ^{3}He gas, the spin-exchange optical pumping method will be used
Experimental study of three-nucleon dynamics in proton-deuteron breakup reaction
Proton–deuteron breakup reaction can serve as a tool to test stateof-
the-art descriptions of nuclear interactions. At intermediate energies,
below the threshold for pion production, comparison of the data with exact
theoretical calculations is possible and subtle effects of the dynamics beyond
the pairwise nucleon–nucleon interaction, namely the three-nucleon force
(3NF), are significant. Beside 3NF, Coulomb interaction or relativistic
effects are also important to precisely describe the differential cross section
of the breakup reaction. The data analysis and preliminary results of the
measurement of proton-induced deuteron breakup at the Cyclotron Center
Bronowice, Institute of Nuclear Physics, Polish Academy of Sciences in
Kraków are presented
Differential Cross Section for Proton Induced Deuteron Breakup at 108 MeV
The differential cross sections for the proton-deuteron breakup reaction have been measured for more than 200 angular configurations of outgoing protons in the range of polar angles from 13 to 27 degrees with a proton beam at 108 MeV. The paper presents the experimental results of the selected configurations, which are compared to state-of-the-art theoretical calculations. In some regions of the phase space, a strong influence of the Coulomb interaction is observed.</p
Deuteron-deuteron collision at 160 MeV
The experiment was carried out using BINA detector at KVI in Groningen. For
the first time an extensive data analysis of the data collected in back part of
the detector is presented, where a clusterization method is utilized for
angular and energy information. We also present differential cross-sections for
the (dddpn) breakup reaction within \textit{dp} quasi-free
scattering limit and their comparison with first calculations based on Single
Scattering Approximation (SSA) approach.Comment: 6 pages, 4 figures, presented at Jagiellonian Symposium 2015 in
Krakow, PhD wor
Experimental studies of the Coulomb force effects in deuteron-proton break-up reaction at medium energy regime
A set of differential cross-section data of the ^{1}H(d, pp)n breakup reaction at 130 and 160 MeV deuteron beam energies has been measured in the forward polar angles domain. The data were collected with the use of the Germanium Wall (FZ Jülich) and BINA (KVI Groningen) detectors. This part of the phase-space is special with respect to the dominant Coulomb force influence on the system dynamics. The data are compared with the theoretical calculations based on the Argonne V18 potential supplemented with the long-range electromagnetic component. The predictions also include the Urbana IX three nucleon force model. The strongest Coulomb effects are found in regions where the relative energy of the two protons is the smallest
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
Studies of Deuteron Breakup Reactions in Deuteron–Deuteron Collisions at 160 MeV with BINA
A rich set of differential cross section of the three-body 2H(d,dp)n breakup reaction at 160MeV
deuteron beam energy has been measured over a large range of the available phase space. The experiment
was performed at KVI in Groningen, the Netherlands, using the BINA detector. The cross-section data for
the breakup reaction have been normalized to the simultaneously measured 2H(d,d)2H elastic scattering cross
section. The breakup cross sections obtained for 147 kinematically complete configurations near the quasifree
scattering kinematics are compared to the recent approximate calculations for the three-cluster breakup in
deuteron–deuteron collisions. The cross sections for 294 kinematic configurations of the quasi-free scattering
regime, for which no theoretical calculations exist, are also presented. Besides the three-body breakup, semiinclusive
energy distributions for the four-body 2H(d,pp)nn breakup are reported
Contribution of three nucleon force investigated in deuteron-proton breakup reaction
The elastic scattering and deuteron breakup data were collected in the experiment performed at KVI (Groningen) with use of unpolarized deuteron beam with energy of 80 MeV per nucleon, impinging on hydrogen target. The procedure applied to determine total integrated luminosity is presented. The result will be used for normalization of the differential cross section for the deuteron-proton breakup reaction
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