Low-lying non-normal parity states in B-8 measured by proton elastic scattering on Be-7
- Authors
- Yamaguchi, H.; Wakabayashi, Y.; Kubono, S.; Amadio, G.; Fujikawa, H.; Teranishi, T.; Saito, A.; He, J. J.; Nishimura, S.; Togano, Y.; Kwon, Y. K.; Niikura, M.; Iwasa, N.; Inafuku, K.; Khiem, L. H.
- Issue Date
- Feb-2009
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- RI beam; Proton resonance scattering; 7 Be(p.gamma)B-8; Solar neutrino
- Citation
- PHYSICS LETTERS B, v.672, no.3, pp 230 - 234
- Pages
- 5
- Journal Title
- PHYSICS LETTERS B
- Volume
- 672
- Number
- 3
- Start Page
- 230
- End Page
- 234
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/65301
- DOI
- 10.1016/j.physletb.2009.01.033
- ISSN
- 0370-2693
- Abstract
- 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.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/65301)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.