18-22 September 2023
GSI Darmstadt, Germany
Europe/Berlin timezone

Directed and elliptic flow observations in Sn+Sn collisions with radioactive beams at 270 MeV/u

18 Sep 2023, 12:30
Main Lecture Hall (GSI Darmstadt, Germany)

Main Lecture Hall

GSI Darmstadt, Germany

Südbau (SB1), GSI Campus
Oral Constraints from heavy-ion collisions at relativistic energies Constraints from heavy-ion collisions at relativistic energies


Mizuki Kurata-Nishimura (RIKEN)


Rapidity dependence of directed flow ($v_1$) and elliptic flow ($v_2$) were analyzed for various particles, including proton, deuteron, triton, $\mathrm{^{3}He}$, and $\mathrm{^{4}He}$ observed in collisions involving $\mathrm{^{132}Sn+{}^{124}Sn}$ and $\mathrm{^{108}Sn+{}^{112}Sn}$ collisions at 270 $\mathrm{MeV/u}$.
The flow was larger for heavier charged particles, i.e.,
the slope of $v_{1}$ ($v_{11}$) and the negative $v_2$ at the mid-rapidity ($v_{20}$) were enhanced for the heavier charged particles.
To understand the experimental data, we compared them with AMD calculations which explicitly consider the cluster correlation.
Two types of momentum-dependent mean field potential were utilized.
AMD calculations explain the increasing flow trend for the heavier particles, but a close comparison shows that the mass dependence is stronger in experimental data.
The sensitivity to the density dependence of the symmetry energy and
the system dependence is also examined.

Primary author


Tadaaki Isobe (RIKEN) Tetsuya MURAKAMI (Department of Physics, Kyoto University) Akira Ono (Tohoku University) Natsumi Ikeno (Tottori University) Chun Yuen Tsang (Kent State University) William Lynch (Michigan State University) Betty Tsang (Michigan State University) S$\pi$RIT collaboration

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