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Exploring the Nα + 3n light nuclei via the ( 7Li,7Be) reaction.
- Source :
-
European Physical Journal A -- Hadrons & Nuclei . Apr2006 Supplement, Vol. 27, p283-288. 6p. 6 Graphs. - Publication Year :
- 2006
-
Abstract
- Experimental signatures of the dynamical correlations of a core with a single-particle neutron have been found in light neutron-rich nuclei investigated via the ( 7Li, 7Be) charge-exchange reactions at around 8MeV/u. Of particular astrophysical relevance are low-lying narrow resonances ( Γ ∼ 200keV FWHM) BSEC (Bound States Embedded in the Continuum). Because of their long lifetime BSEC states are likely to effect the capture rates in any scenario for nucleosynthesis in neutron-rich environment. They have been observed in the continuum of 11Be and 15C nuclei. A microscopic nuclear structure model based on QRPA theory, which takes into account Dynamical Core Polarisation (DCP) correlations, gives a suitable description of these resonances as well as single-particle states of the studied systems. In this context, high-energy narrow structures populated in nuclei having an integer number of α-particles plus three neutrons are good BSEC candidates and can be systematically investigated. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NEUTRONS
*LITHIUM
*BERYLLIUM
*NUCLEAR physics
*CHEMICAL reactions
Subjects
Details
- Language :
- English
- ISSN :
- 14346001
- Volume :
- 27
- Database :
- Academic Search Index
- Journal :
- European Physical Journal A -- Hadrons & Nuclei
- Publication Type :
- Academic Journal
- Accession number :
- 20559489
- Full Text :
- https://doi.org/10.1140/epja/i2006-08-043-4