Low-lying non-normal parity states in B-8 measured by proton elastic scattering on Be-7

doi:10.1016/j.physletb.2009.01.033

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	Low-lying non-normal parity states in B-8 measured by proton elastic scattering on Be-7
	Yamaguchi, H.1; Wakabayashi, Y.1; Kubono, S.1; Amadio, G.1; Fujikawa, H.1; Teranishi, T.2; Saito, A.3; He, J. J.4; Nishimura, S.5; Togano, Y.6
刊名	PHYSICS LETTERS B
	2009-02-23
卷号	672 期号:3 页码:230-234
关键词	RI beam Proton resonance scattering 7 Be(p.gamma)B-8 Solar neutrino
ISSN号	0370-2693
DOI	10.1016/j.physletb.2009.01.033
英文摘要	A new measurement of proton resonance scattering on Be-7 was performed tip to the center-of-mass energy of 6.7 MeV using the low-energy RI beam facility CRIB (CNS Radioactive Ion Beam separator) at the Center for Nuclear Study of the University of Tokyo. The excitation function of Be-7 + p elastic scattering above 3.5 MeV was measured Successfully for the first time, providing important information about the resonance structure of the B-8 nucleus. The resonances are related to the reaction rate of Be-7(p.gamma)B-8. which is the key reaction in solar B-8 neutrino production. Evidence for the presence of two negative parity states is presented. One of them is a 2(-) state observed as a broad s-wave resonance, the existence of which had been questionable. Its possible effects on the determination of the astrophysical S-factor of Be-7(p.gamma)B-8 at solar energy are discussed. The other state had not been observed in previous measurements, and its spin and parity were determined as 1(-). (C) 2009 Elsevier B.V. All rights reserved.
资助项目	Young Scientists[17740135]
WOS关键词	BE-7(P,GAMMA)B-8 CROSS-SECTION ; SHELL-MODEL TREATMENT ; S-FACTOR ; COULOMB DISSOCIATION ; SEPARATOR CRIB ; A=4-16 NUCLEI ; GAMMA)B-8 ; ENERGIES ; BEAM ; LI-8
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000263947900006
资助机构	Young Scientists
公开日期	2010-10-29
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/5293]
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	Yamaguchi, H.
作者单位	1.Univ Tokyo, CNS, Wako, Saitama 3510198, Japan 2.Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan 3.Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan 4.CAS, Inst Modern Phys, Lanzhou 730000, Peoples R China 5.RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan 6.Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan 7.Chung Ang Univ, Dept Phys, Seoul 156756, South Korea 8.Tohoku Univ, Dept Phys, Aoba Ku, Sendai, Miyagi 9808578, Japan 9.Vietnam Acad Sci & Technol, Inst Phys & Elect, Hanoi, Vietnam
推荐引用方式 GB/T 7714	Yamaguchi, H.,Wakabayashi, Y.,Kubono, S.,et al. Low-lying non-normal parity states in B-8 measured by proton elastic scattering on Be-7[J]. PHYSICS LETTERS B,2009,672(3):230-234.
APA	Yamaguchi, H..,Wakabayashi, Y..,Kubono, S..,Amadio, G..,Fujikawa, H..,...&Khiem, L. H..(2009).Low-lying non-normal parity states in B-8 measured by proton elastic scattering on Be-7.PHYSICS LETTERS B,672(3),230-234.
MLA	Yamaguchi, H.,et al."Low-lying non-normal parity states in B-8 measured by proton elastic scattering on Be-7".PHYSICS LETTERS B 672.3(2009):230-234.