The correlation functions and emission time scales for light particles and light fragments in Ar-40+Au-197 reactions 25 MeV/nucleon

	The correlation functions and emission time scales for light particles and light fragments in Ar-40+Au-197 reactions 25 MeV/nucleon
	He, ZY; Duan, LM; Jin, GM; Li, ZY; Wu, HY; Zhang, BG; Wen, WX; Qi, YJ; Luo, QZ; Dai, GX
刊名	NUCLEAR PHYSICS A
	1997-07-07
卷号	620 页码:214-228
关键词	Au-197(Ar-40,X) E=25 MeV/nucleon measured light charged particles intermediate mass fragments correlation functions deduced mean emission time temperature
ISSN号	0375-9474
英文摘要	Two-particle correlation functions were measured for the emission of protons, deuterons, tritons, alpha, and lithium fragment at small relative momenta in Ar-40-induced reactions on Au-197 at 25 MeV/nucleon. Based on three-body trajectory calculations the emission time scales for the particles were extracted from p-d, d-d, t-t, and lithium-lithium correlation functions. The mean emission time was found to decrease with increasing sum of the kinetic energies of the particle in a correlated pairs, indicating the emission of more energetic particles at earlier stages of the reaction than at later stages. The time scale for the emission of lithium fragments emission suggests that sequential binary disassembly occurs in Ar-40+Au-197 reaction at MeV/nucleon. Mean emission temperature of 3.5(-0.8)(+1.3) and 3.6 +/- 0.4 MeV were also extracted from the relative populations of the excited and ground states of the respective emitted nuclides Be-8 and He-4. (C) 1997 Elsevier Science B.V.
WOS关键词	HEAVY-ION REACTIONS ; INTERMEDIATE-MASS FRAGMENTS ; EXCITED-STATE POPULATIONS ; AR-36+AU-197 COLLISIONS ; EXCITATION-ENERGY ; 2-PARTICLE CORRELATIONS ; COMPOSITE NUCLEI ; UNBOUND STATES ; HOT NUCLEI ; TEMPERATURES
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:A1997XK48900005
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/46826]
专题	中国科学院近代物理研究所
通讯作者	He, ZY
作者单位	CHINESE ACAD SCI,INST MODERN PHYS,POB 31,LANZHOU 730000,PEOPLES R CHINA
推荐引用方式 GB/T 7714	He, ZY,Duan, LM,Jin, GM,et al. The correlation functions and emission time scales for light particles and light fragments in Ar-40+Au-197 reactions 25 MeV/nucleon[J]. NUCLEAR PHYSICS A,1997,620:214-228.
APA	He, ZY.,Duan, LM.,Jin, GM.,Li, ZY.,Wu, HY.,...&Dai, GX.(1997).The correlation functions and emission time scales for light particles and light fragments in Ar-40+Au-197 reactions 25 MeV/nucleon.NUCLEAR PHYSICS A,620,214-228.
MLA	He, ZY,et al."The correlation functions and emission time scales for light particles and light fragments in Ar-40+Au-197 reactions 25 MeV/nucleon".NUCLEAR PHYSICS A 620(1997):214-228.