Spectra of Protons and Subthreshold Pions for Collisions of Heavy Ions Using a Hydrodynamic Approach with a Nonequilibrium Equation of State
- Authors: D’yachenko A.T.1, Mitropolsky I.A.2,3
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Affiliations:
- Emperor Alexander I Petersburg State Transport University
- Petersburg Nuclear Physics Institute
- Saint Petersburg Scientific Center
- Issue: Vol 82, No 12 (2019)
- Pages: 1641-1646
- Section: Mathematical Modeling in Nuclear Technologies
- URL: https://journal-vniispk.ru/1063-7788/article/view/195917
- DOI: https://doi.org/10.1134/S106377881912007X
- ID: 195917
Cite item
Abstract
The nonequilibrium equation of state is studied in the context of the hydrodynamic approach. The compression stage, the expansion stage, and the freeze-out stage of the hot spot formed during the collisions of heavy ions are considered. The energy spectra of protons and subthreshold pions produced in collisions of heavy ions are calculated with inclusion of the nuclear viscosity effects and compared with experimental data for various combinations of colliding nuclei with energies of several tens of MeV per nucleon.
About the authors
A. T. D’yachenko
Emperor Alexander I Petersburg State Transport University
Author for correspondence.
Email: dyachenko_a@mail.ru
Russian Federation, St. Petersburg, 190031
I. A. Mitropolsky
Petersburg Nuclear Physics Institute; Saint Petersburg Scientific Center
Email: dyachenko_a@mail.ru
Russian Federation, Gatchina, Leningrad oblast, 188300; St. Petersburg, 199034
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