Experimental investigation of abnormal transverse flow enhancement of alpha particles in heavy-ion collisions

doi:10.1103/PhysRevC.104.044611

	Experimental investigation of abnormal transverse flow enhancement of alpha particles in heavy-ion collisions
	Huang, Y.11; Lin, W.11; Zheng, H.12; Wada, R.13,14; Bonasera, A.1,13; Chen, Z.2; Han, J.11; Han, R.2; Huang, M.3; Hagel, K.13
刊名	PHYSICAL REVIEW C
	2021-10-12
卷号	104 期号:4 页码:12
ISSN号	2469-9985
DOI	10.1103/PhysRevC.104.044611
通讯作者	Liu, X.(liuxingquan@scu.edu.cn)
英文摘要	The mass dependence of the transverse flow for Z = 1-5 fragments from the collisions of Ar-40 + Al-27, Ar-40 + Ti-48, and Ar-40 + Ni-58 at 47 MeV/nucleon is investigated experimentally in this article. The transverse flow values are determined using the in-plane components of the fragment transverse momenta, where three conventional methods, i.e., the kinetic flow tensor method, the transverse momentum analysis method, and the azimuthal correlation method, are applied to reconstruct the reaction plane in an event-by-event basis. It is demonstrated from the comparison of the present experimental mass dependent flow measurements and the model simulations using an improved antisymmetrized molecular dynamics model that the experimentally observed abnormal alpha transverse flow enhancement is closely related to the reaction plane reconstruction procedure in the flow extraction. We further investigate the physical existence of the abnormal alpha flow behavior using a two-particle azimuthal correlation method, which allows us to provide the relative flow magnitude information with an identification of fragment charge number without the knowledge of the reaction plane differing from the three conventional methods. It is found that the relative flow magnitudes deduced from the two-particle azimuthal correlation functions with an identification of Z, with the correction for the recoil effect imposed by the momentum conservation, show a monotonically increasing trend as a function of fragment charge number, with no exception of the alpha flow enhancement. These results, in addition to those from the improved antisymmetrized molecular dynamics model simulations, definitely provide experimental evidences for the inexistence of the abnormal alpha flow behavior in the heavy-ion collisions at the present incident energy region in nature.
资助项目	National Natural Science Foundation of China[11705242] ; National Natural Science Foundation of China[U1632138] ; National Natural Science Foundation of China[11805138] ; National Natural Science Foundation of China[11905120] ; National Natural Science Foundation of China[11975091] ; National Natural Science Foundation of China[11947416] ; Fundamental Research Funds For the Central Universities[YJ201954] ; Fundamental Research Funds For the Central Universities[YJ201820] ; International Visiting Program for Excellent Young Scholars of Sichuan University ; U.S. Department of Energy under 376 Grant[DE-FG02-93ER40773] ; Robert A. Welch Foundation[A330]
WOS关键词	NUCLEUS-NUCLEUS COLLISIONS ; COLLECTIVE-FLOW ; MOLECULAR-DYNAMICS ; AZIMUTHAL DISTRIBUTIONS ; ISOSPIN DEPENDENCE ; MOTION ; DISAPPEARANCE ; AR-40+AL-27 ; FRAGMENTS ; EMISSION
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000707420400003
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds For the Central Universities ; International Visiting Program for Excellent Young Scholars of Sichuan University ; U.S. Department of Energy under 376 Grant ; Robert A. Welch Foundation
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/136201]
专题	中国科学院近代物理研究所
通讯作者	Liu, X.
作者单位	1.Ist Nazl Fis Nucl, Lab Nazl Sud, Via Santa Sofia 62, I-95123 Catania, Italy 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Inner Mongolia Univ Nationalities, Coll Phys & Elect Informat, Tongliao 028000, Peoples R China 4.Catholic Univ Louvain, FNRS, B-1348 Louvain la Neuve, Belgium 5.Catholic Univ Louvain, IPN, B-1348 Louvain la Neuve, Belgium 6.Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China 7.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 8.Jagiellonian Univ, Krakow, Poland 9.Nucl Power Inst China, Sci & Technol Reactor Syst Design Technol Lab, Chengdu 610213, Peoples R China 10.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China
推荐引用方式 GB/T 7714	Huang, Y.,Lin, W.,Zheng, H.,et al. Experimental investigation of abnormal transverse flow enhancement of alpha particles in heavy-ion collisions[J]. PHYSICAL REVIEW C,2021,104(4):12.
APA	Huang, Y..,Lin, W..,Zheng, H..,Wada, R..,Bonasera, A..,...&Natowitz, J. B..(2021).Experimental investigation of abnormal transverse flow enhancement of alpha particles in heavy-ion collisions.PHYSICAL REVIEW C,104(4),12.
MLA	Huang, Y.,et al."Experimental investigation of abnormal transverse flow enhancement of alpha particles in heavy-ion collisions".PHYSICAL REVIEW C 104.4(2021):12.