Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term
Within the ultrarelativistic quantum molecular dynamics (UrQMD) model, by reversely tracing nucleons that are finally emitted at mid-rapidity (|y0| < 0.1) in the entire reaction process, the time evolution of elliptic flow (v2) of these traced nucleons is studied in Au+Au collisions at beam energ...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269323000199 |
| _version_ | 1797905352603205632 |
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| author | Bo Gao Yongjia Wang Zepeng Gao Qingfeng Li |
| author_facet | Bo Gao Yongjia Wang Zepeng Gao Qingfeng Li |
| author_sort | Bo Gao |
| collection | DOAJ |
| description | Within the ultrarelativistic quantum molecular dynamics (UrQMD) model, by reversely tracing nucleons that are finally emitted at mid-rapidity (|y0| < 0.1) in the entire reaction process, the time evolution of elliptic flow (v2) of these traced nucleons is studied in Au+Au collisions at beam energy of 0.4 GeV/nucleon with different impact parameters. The initial value of v2 is positive and increases with impact parameter, it then decreases as time passes and tends to saturate at a negative value. It is found that nucleon-nucleon collisions always suppress the value of v2 (enhance the out-of-plane emission), while the nuclear mean field potential effect is more complex, which depends on both impact parameter and reaction time. The most relevant density probed by v2 of nucleons at mid-rapidity is found to be ∼ 60% of the maximum density reached during the collisions. |
| first_indexed | 2024-04-10T10:04:58Z |
| format | Article |
| id | doaj.art-c6996ab4e93a4d82b2a5c64246b06315 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-10T10:04:58Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-c6996ab4e93a4d82b2a5c64246b063152023-02-16T04:17:34ZengElsevierPhysics Letters B0370-26932023-03-01838137685Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision termBo Gao0Yongjia Wang1Zepeng Gao2Qingfeng Li3School of Science, Huzhou University, Huzhou 313000, China; School of Physical and Electronic Engineering, Shanxi University, Taiyuan 030006, ChinaSchool of Science, Huzhou University, Huzhou 313000, China; Corresponding author.Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China; School of Science, Huzhou University, Huzhou 313000, ChinaSchool of Science, Huzhou University, Huzhou 313000, China; Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China; Corresponding author at: School of Science, Huzhou University, Huzhou 313000, China.Within the ultrarelativistic quantum molecular dynamics (UrQMD) model, by reversely tracing nucleons that are finally emitted at mid-rapidity (|y0| < 0.1) in the entire reaction process, the time evolution of elliptic flow (v2) of these traced nucleons is studied in Au+Au collisions at beam energy of 0.4 GeV/nucleon with different impact parameters. The initial value of v2 is positive and increases with impact parameter, it then decreases as time passes and tends to saturate at a negative value. It is found that nucleon-nucleon collisions always suppress the value of v2 (enhance the out-of-plane emission), while the nuclear mean field potential effect is more complex, which depends on both impact parameter and reaction time. The most relevant density probed by v2 of nucleons at mid-rapidity is found to be ∼ 60% of the maximum density reached during the collisions.http://www.sciencedirect.com/science/article/pii/S0370269323000199 |
| spellingShingle | Bo Gao Yongjia Wang Zepeng Gao Qingfeng Li Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term Physics Letters B |
| title | Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term |
| title_full | Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term |
| title_fullStr | Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term |
| title_full_unstemmed | Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term |
| title_short | Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term |
| title_sort | elliptic flow in heavy ion collisions at intermediate energy the role of impact parameter mean field potential and collision term |
| url | http://www.sciencedirect.com/science/article/pii/S0370269323000199 |
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