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Abstract <p>Based on the Klein–Fock–Gordon equation, a nonequilibrium hydrodynamic approach is formulated to describe collisions of intermediate-energy heavy ions, and a comparison of the calculated differential fragment emission cross sections with experimental data from IHEP (Serpukhov), ITEP (Moscow), and BM@N collaboration (JINR, Dubna) is carried out. In this approach, a description of experimental data on double differential emission cross sections of the <sup>1</sup>H, <sup>2</sup>H, and <sup>3</sup>H nuclei in the reaction (19.6 GeV/nucleon) <sup>12</sup>C + <sup>12</sup>C (IHEP) and reactions of <sup>40</sup>Ar nuclei with <sup>64</sup>Cu and <sup>208</sup>Pb nuclei (BM@N collaboration) at an energy of 3.2 GeV/nucleon, as well as <sup>11</sup>Be and <sup>12</sup>B at an angle of 3.5° in the reaction (300 MeV/nucleon) <sup>12</sup>C + <sup>9</sup>Be (ITEP) is obtained. A comparison with other models is made and the dynamics of the process of fragmentation is analyzed.</p>

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Fragment Emission in Intermediate Energy Heavy Ion Collisions Based on the Nonequilibrium Quantum Hydrodynamic Approach

  • 期刊论文

  • 发表日期：

    2026年5月25日

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  • A. T. D’yachenko

摘要

Abstract

Based on the Klein–Fock–Gordon equation, a nonequilibrium hydrodynamic approach is formulated to describe collisions of intermediate-energy heavy ions, and a comparison of the calculated differential fragment emission cross sections with experimental data from IHEP (Serpukhov), ITEP (Moscow), and BM@N collaboration (JINR, Dubna) is carried out. In this approach, a description of experimental data on double differential emission cross sections of the 1H, 2H, and 3H nuclei in the reaction (19.6 GeV/nucleon) 12C + 12C (IHEP) and reactions of 40Ar nuclei with 64Cu and 208Pb nuclei (BM@N collaboration) at an energy of 3.2 GeV/nucleon, as well as 11Be and 12B at an angle of 3.5° in the reaction (300 MeV/nucleon) 12C + 9Be (ITEP) is obtained. A comparison with other models is made and the dynamics of the process of fragmentation is analyzed.