Investigation of nuclear deformation in excited Fr-213

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	Investigation of nuclear deformation in excited Fr-213
	Wu, HY; Wei, ZY; Zheng, JW; Wen, WX; Jin, GM; Li, ZY; He, ZY; Wang, HW; Xiao, ZG; Wang, SF
刊名	HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
	2001-07-01
卷号	25 期号:7 页码:636-642
关键词	GDR statistical decay angular correlation shape transition
ISSN号	0254-3052
英文摘要	Angular correlations between gamma rays and fission fragments were measured for the reaction O-16 + Au-197 at 132MeV. The probability of giant dipole resonance gamma rays emission relative to the spin axis of the compound system was extracted by using the correlations, which give direct information about nuclear deformation. Large anisotropy observed in the gamma rays energy region of the compound nucleus giant dipole resonance demonstrates unambiguously a deformed shape of the Fr-213 compound system at excitation energies of 92MeV. The fission coincidence gamma ray spectra were fitted consistently in terms of the statistical gamma ray decay of the compound system and excited fission fragments. The giant dipole resonance parameters obtained from the fits were then used to compute the gamma ray angular distributions with respect to the compound nucleus spin axis for prolate and oblate shapes. The comparation between the calculation and the experimental results at excitation of 92MeV show that the Fr-213 nucleus is in the transition from a collective prolate to a noncollective oblate shape.
WOS关键词	GIANT-RESONANCES ; FISSION
WOS研究方向	Physics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000169948600005
公开日期	2010-10-29
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/1449]
专题	近代物理研究所_近代物理研究所知识存储（2010之前）
通讯作者	Zhang, BG
作者单位	Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wu, HY,Wei, ZY,Zheng, JW,et al. Investigation of nuclear deformation in excited Fr-213[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2001,25(7):636-642.
APA	Wu, HY.,Wei, ZY.,Zheng, JW.,Wen, WX.,Jin, GM.,...&Zhang, BG.(2001).Investigation of nuclear deformation in excited Fr-213.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,25(7),636-642.
MLA	Wu, HY,et al."Investigation of nuclear deformation in excited Fr-213".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 25.7(2001):636-642.