Rapidity distributions of Z=1 isotopes and the nuclear symmetry energy from Sn plus Sn collisions with radioactive beams at 270 MeV/nucleon

被引：5

作者：

Kaneko, M. ^{[1
,2
]}

Murakami, T. ^{[1
]}

Isobe, T. ^{[2
]}

Kurata-Nishimura, M. ^{[2
]}

Ono, A. ^{[3
]}

Ikeno, N. ^{[4
]}

Barney, J. ^{[5
,6
]}

Cerizza, G. ^{[5
]}

Estee, J. ^{[5
,6
]}

Jhang, G. ^{[5
]}

Lee, J. W. ^{[7
]}

Lynch, W. G. ^{[5
,6
]}

Santamaria, C. ^{[5
]}

Tsang, C. Y. ^{[5
,6
]}

Tsang, M. B. ^{[5
,6
]}

Wang, R. ^{[5
]}

Ahn, D. S. ^{[2
,8
]}

Atar, L. ^{[9
,10
]}

Aumann, T. ^{[9
,10
]}

Baba, H. ^{[2
]}

Boretzky, K. ^{[10
]}

Brzychczyk, J. ^{[12
]}

Chiga, N. ^{[2
]}

Fukuda, N. ^{[2
]}

Gasparic, I ^{[11
]}

Hong, B. ^{[7
]}

Horvat, A. ^{[9
,10
]}

Ichihara, T. ^{[2
]}

Ieki, K. ^{[17
]}

Inabe, N. ^{[2
]}

Kim, Y. J. ^{[16
]}

Kobayashi, T. ^{[3
]}

Kondo, Y. ^{[15
]}

Lasko, P. ^{[13
]}

Lee, H. S. ^{[16
]}

Leifels, Y. ^{[10
]}

Lukasik, J. ^{[13
]}

Manfredi, J. ^{[5
,6
]}

McIntosh, A. B. ^{[18
]}

Morfouace, P. ^{[5
]}

Nakamura, T. ^{[15
]}

Nakatsuka, N. ^{[1
,2
]}

Nishimura, S. ^{[2
]}

Olsen, R. ^{[18
]}

Otsu, H. ^{[2
]}

Pawlowski, P. ^{[13
]}

Pelczar, K. ^{[14
]}

Rossi, D. ^{[10
]}

Sakurai, H. ^{[2
]}

Sato, H. ^{[2
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[3] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[4] Tottori Univ, Dept Life & Environm Agr Sci, Tottori 6808551, Japan

[5] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[6] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[7] Korea Univ, Dept Phys, Seoul 02841, South Korea

[8] Korea Basic Sci Inst, Daejeon 34133, South Korea

[9] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[10] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

[11] Rudjer Boskovic Inst, Div Expt Phys, HR-10002 Zagreb, Croatia

[12] Jagiellonian Univ, Fac Phys Astron & Appl Comp Sci, Pl-30348 Krakow, Poland

[13] Polish Acad Sci, Inst Nucl Phys, Pl-31342 Krakow, Poland

[14] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Laquila, Italy

[15] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

[16] Inst for Basic Sci Korea, Rare Isotope Sci Project, Daejeon 34047, South Korea

[17] Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan

[18] Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 USA

[19] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

[20] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

来源：

PHYSICS LETTERS B | 2021年 / 822卷

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

Heavy radioactive isotope collisions; Cluster productions; Nuclear symmetry energy; Antisymmetrized molecular dynamics; TIME PROJECTION CHAMBER; EQUATION-OF-STATE; CLUSTER PRODUCTION; HEAVY; FLOW; FRAGMENTS; DYNAMICS; SYSTEM; PROBE;

D O I：

10.1016/j.physletb.2021.136681

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The rapidity distributions of hydrogen isotopes emitted from central collisions of neutron-rich Sn-132+Sn-124 and neutron-deficient Sn-108+Sn-112 systems at 270 MeV/nucleon were investigated at RIKEN-RIBF. The data are compared with antisymmetrized molecular dynamics (AMD) calculations and the rapidity distributions can be reproduced after adjusting the in-medium nucleon-nucleon cross sections. The double ratios between the two reaction systems taken for the relative yields of deuteron to proton (d/p) and triton to proton (t/p) are further examined in the midrapidity domain, where the adjustments in the AMD calculations do not affect much on them. The d/p and t/p double ratios at midrapidity agree well with the ratio of the system neutron numbers and its squared value, respectively, and the rapidity dependence of these double ratios is consistent with a picture of partial mixing of colliding nuclei. By comparing with the AMD model which shows a strong symmetry energy dependence of the t/p double ratio, the experimental result in the midrapidity domain favors the calculation with a symmetry-energy slope parameter around L = 46 MeV rather than L = 108 MeV. (C) 2021 The Author(s). Published by Elsevier B.V.

引用

页数：8

共 5 条

[1] Effects of the momentum dependence of nuclear symmetry potential on pion observables in Sn plus Sn collisions at 270 MeV/nucleon
Wei, Gao-Feng
Huang, Xin
Zhi, Qi-Jun
Dong, Ai-Jun
Peng, Chang-Gen
Long, Zheng-Wen
NUCLEAR SCIENCE AND TECHNIQUES, 2022, 33 (12)
[2] Effects of the momentum dependence of nuclear symmetry potential on pion observables in Sn + Sn collisions at 270 MeV/nucleon
Gao-Feng Wei
Xin Huang
Qi-Jun Zhi
Ai-Jun Dong
Chang-Gen Peng
Zheng-Wen Long
Nuclear Science and Techniques, 2022, 33
[3] Effects of the momentum dependence of nuclear symmetry potential on pion observables in Sn + Sn collisions at 270 MeV/nucleon
Gao-Feng Wei
Xin Huang
Qi-Jun Zhi
Ai-Jun Dong
Chang-Gen Peng
Zheng-Wen Long
Nuclear Science and Techniques, 2022, 33 (12) : 149 - 160
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[5] Study of the nuclear symmetry energy from the rapidity-dependent elliptic flow in heavy-ion collisions around 1 GeV/nucleon regime
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PHYSICS LETTERS B, 2020, 802

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