Research output: Contribution to journal › Article › peer-review
Emission of High Energy Protons and Pions in Collisions of Heavy Ions within the Framework of a Nonequilibrium Hydrodynamic Approach. / D’yachenko, A. T.; Mitropolsky, I. A.
In: Physics of Particles and Nuclei, Vol. 53, No. 2, 01.04.2022, p. 505-512.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Emission of High Energy Protons and Pions in Collisions of Heavy Ions within the Framework of a Nonequilibrium Hydrodynamic Approach
AU - D’yachenko, A. T.
AU - Mitropolsky, I. A.
N1 - Publisher Copyright: © 2022, Pleiades Publishing, Ltd.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Abstract: A hydrodynamic approach with a nonequilibrium equation of state is developed to describe the emission of protons and pions formed in collisions of heavy ions of intermediate energies, an amendment for the microcanonical distribution is taken into account, and the contribution of the fragmentation process is included. Experimental data of Institute of Theoretical and Experimental Physics (Moscow) on collisions of 12C nuclei with a beryllium target at energies of 1–2 GeV per nucleon for carbon nuclei with proton emission are considered. It is shown that these data can be described within a hydrodynamic model for high-energy cumulative region of the proton spectrum, taking into account the contribution from ion fragmentation for the soft spectral region within the framework of the statistical fragmentation model. The calculated double differential cross sections for pion emission at these energies agree with the available experimental data.
AB - Abstract: A hydrodynamic approach with a nonequilibrium equation of state is developed to describe the emission of protons and pions formed in collisions of heavy ions of intermediate energies, an amendment for the microcanonical distribution is taken into account, and the contribution of the fragmentation process is included. Experimental data of Institute of Theoretical and Experimental Physics (Moscow) on collisions of 12C nuclei with a beryllium target at energies of 1–2 GeV per nucleon for carbon nuclei with proton emission are considered. It is shown that these data can be described within a hydrodynamic model for high-energy cumulative region of the proton spectrum, taking into account the contribution from ion fragmentation for the soft spectral region within the framework of the statistical fragmentation model. The calculated double differential cross sections for pion emission at these energies agree with the available experimental data.
UR - http://www.scopus.com/inward/record.url?scp=85132659973&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/21a02219-9508-3b10-ac37-2f0754930249/
U2 - 10.1134/s1063779622020319
DO - 10.1134/s1063779622020319
M3 - Article
AN - SCOPUS:85132659973
VL - 53
SP - 505
EP - 512
JO - Physics of Particles and Nuclei
JF - Physics of Particles and Nuclei
SN - 1063-7796
IS - 2
ER -
ID: 97139639