.
The results on the differential cross section of
dp
elastic scattering obtained at the Internal Target Station at the Nuclotron JINR at the energies of 500, 750 and 900MeV/nucleon are presented. ...The measurements have been performed using an unpolarized deuteron beam and polyethylene foil target. The data have been obtained in the angular range of
70
∘
-
120
∘
in the cms. The angular dependences of the data from the present experiment are compared with the world experimental data obtained at nearby energies as well as with the theoretical calculations performed within the relativistic multiple scattering theory. The behavior of the differential cross section at the fixed scattering angles covering the total cms energy region of
s
=
3
.
1
-
3
.
42
GeV is in qualitative agreement with the
s
power-law dependence.
The results of measurements of the differential cross section for elastic deuteron–proton scattering at the energy of 700 MeV per nucleon that were performed at the internal target station of the ...nuclotron at the Joint Institute for Nuclear Research (JINR, Dubna) are presented. These data were obtained at angles in the range between 70◦ and 120◦ in the c.m. frame. The angular dependence obtained in this way is compared with world-averaged data at similar energies and with the results of theoretical calculations performed within the relativistic theory of multiple scattering.
In the Laboratory of High-Energy Physics, 16-channel prototypes of detectors (with SiPM readout produced by Ketek and Hamamatsu) were developed for their application in zero-degree calorimetry and ...for measuring the profile of a low-energy neutron beam. This paper presents the method for determining the voltage of the breakpoint of the noise characteristic of silicon photomultipliers in the multichannel detector and its temperature dependence in the range from 27.7°C to 39.1°C. The response of SiPM to the LED source of calibrated light pulses has been studied and the time resolution has been obtained.
The deuteron beam vector polarization is obtained at the Nuclotron Internal Target Station using quasielastic proton–proton scattering on the polyethylene target. The selection of useful events is ...performed using the time and amplitude information from scintillation counters. The asymmetry on the hydrogen is obtained by the subtraction of the carbon background. The values of vector polarization are obtained at the beam energies of 500 and 650 MeV/nucleon. The obtained values are compared with the data obtained in the deuteron–proton elastic scattering at the beam energy of 135 MeV/nucleon.
The results from studies of the differential cross section of elastic deuteron–proton scattering at 500–1000 MeV/nucleon on the Nuclotron Internal Targets Station are presented and compared to the ...available experimental data for similar energies, and to the results of theoretical calculations in the theory of relativistic multiple scattering.
The vector Ay and tensor analyzing powers Ayy and Axx for dp-elastic scattering were measured at Tdlab=880 MeV over the c.m. angular range from 60° to 140° at the JINR Nuclotron. The data are ...compared with predictions of different theoretical models based on the use of nucleon–nucleon forces only. The observed discrepancies of the measured analyzing powers from the calculations require the consideration of additional mechanisms.
The values of the analyzing power in quasi-elastic proton-proton (
pp
) scattering are obtained at the Nuclotron Internal Target Station using a polarized deuteron beam at an energy of 500 ...MeV/nucleon and the polyethylene target. The selection of useful events has been performed using the time and amplitude information from scintillation counters. Asymmetry by protons has been obtained by the subtraction of the carbon background from the data accumulated on polyethylene. The analyzing power values are compared with predictions of SAID partial-wave analysis and the data of other experiments.
The polarization observables are sensitive to the two nucleón (2NF) and three-nucleon structures (3NF) of the nuclei. The aim of the deuteron spin structure (DSS) experiment is to obtain polarization ...observables in dp elastic scattering at large CMS angles (> 60°) and in dp breakup. Of great importance is the study of polarizations observables in these reactions at intermediate energies because the experimental and theoretical data are very scarce. In this review, results of vector and tensor analyzing powers obtained at JINR Nuclotron at 800 MeV will be presented.
Deuteron Spin Structure (DSS) collaboration program is aimed on few nucleon correlations investigation using unpolarized and polarized deuteron beam at intermediate energy range. Data of the dp ...breakup reaction have been obtained at energy range from 300 - 500 MeV of deuteron energy for various detector configurations in region where few nucleon correlations and relativistic effects can play significant role. Results are obtained in the form of S-curve and T20 and iT11 tensor analyzing powers in case of unpolarized and polarized data, respectively. Future plans on extracted deuteron beam of Nuclotron are concerned to tensor analyzing power T20 and spin correlation Cyy of 3He(d, p)4He reaction in the kinetic energy range between 1.0 and 1.75 GeV.
The dp breakup reaction has been investigated by the scintillation detectors placed at the vicinity of Internal Target Station (ITS) of Nuclotron. Data have been obtained at the angles of 19° - 54° ...in the laboratory frame at the deuteron energy of 300 - 500 MeV in a various detector configurations in which the sensitivity to the three nucleon correlations and relativistic effects are assumed. Preliminary results of the five fold differential cross section for particular detector configurations of the dp breakup reaction at 400 MeV of deuteron energy have been obtained.
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