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

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Kurata-Nishimura, M.; Kaneko, M.; Isobe, T.; Murakami, T.; Ono, A.; Ikeno, N.; Tsang, C.Y.; Barney, J.; Estee, J.; Jhang, G.; Lee, J.W.; Lynch, W.G.; Tsang, M.B.; Shane, R.; Santamaria, C.; Tangwancharoen, S.; Wang, R.; McIntosh, A.B.; Yennello, S.J.; Cerizza, G.; Manfredi, J.; Morfouace, P.; Lasko, P.; Łukasik, J.; Sochocka, A.; Kim, Y.J.; Pawłowski, P.; Pelczar, K.; Brzychczyk, J.; Zhang, Y.; Hong, B.; Xiao, Z.G.; Atar, L.; Aumann, T.; Boretzky, K.; Gasparic, I.; Horvat, A.; Leifels, Y.; Rossi, D.; Scheit, H.; Simon, H.; Snoch, A.; Törnqvist, H.; Ahn, D.S.; Baba, H.; Chiga, N.; Fukuda, N.; Ieki, K.; Inabe, N.; Kobayashi, T.; Kondo, Y.; Lee, H.S.; Nakamura, T.; Nakatsuka, N.; Nishimura, S.; Otsu, H.; Sakuraï, H.; Sato, H.; Shimizu, Y.; Sumikama, T.; Suzuki, D.; Suzuki, H.; Takeda, H.; Togano, Y.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2025

วารสาร: Physics Letters B (0370-2693)

Volume number: 871

หน้าแรก: 139970

นอก: 0370-2693

eISSN: 1873-2445

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-105021116588&doi=10.1016%2Fj.physletb.2025.139970&partnerID=40&md5=b2bc9e1975f6aa3baaee383519ed6395

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

Radioactive tin beams were used to explore the flow observables under varying isospin asymmetries while maintaining a constant total charge. The rapidity dependence of directed flow ( v 1 ) and elliptic flow ( v 2 ) was studied for protons, deuterons, tritons, 3 H e , and 4 H e , produced in neutron-rich 132 Sn + 124 Sn and neutron-deficient 108 S n + 112 S n collisions at 270 MeV / nucleon . In general, heavier particles exhibited larger v 1 and v 2 values. The experimental data was used to test transport models which simulate heavy ion collisions. Specifically, comparisons were made with Antisymmetrized Molecular Dynamics (AMD) model calculations, which explicitly account for cluster correlations. Two types of momentum-dependent mean field potentials were tested. The results reveal that both v 1 and v 2 values are enhanced when the mean field incorporates stronger momentum dependence. In addition, v 2 exhibits larger sensitivity to symmetry energy than v 1 but the overall sensitivity to symmetry energy is low. In an attempt to describe the data, different parameter sets have been tried. Most describe either the hydrogen flow or helium flow reasonably well but none describes the flow of all particles simultaneously. © 2025 The Authors.

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