학술논문

Direct measurements of (p, $ \gamma$) cross-sections at astrophysical energies using radioactive beams and the Daresbury Recoil Separator.
Document Type
Article
Source
European Physical Journal A -- Hadrons & Nuclei. Dec2009, Vol. 42 Issue 3, p457-460. 4p. 1 Diagram, 3 Graphs.
Subject
*NUCLEAR cross sections
*ASTROPHYSICS
*NUCLEOSYNTHESIS
*EXOTIC nuclei
*ION bombardment
*IONIZATION (Atomic physics)
*NUCLEAR physics
Language
ISSN
1434-6001
Abstract
There are a number of astrophysical environments in which the path of nucleosynthesis proceeds through proton-rich nuclei. These nuclei have traditionally not been available as beams, and thus proton-capture reactions on these nuclei could only be studied indirectly. At the Holifield Radioactive Ion Beam Facility (HRIBF), some of the first direct measurements of ( p, $ \gamma$) cross-sections on radioactive beams have been made. The Daresbury Recoil Separator (DRS) has been used to separate the recoils of interest from the unreacted primary beam and identify them in an isobutane-filled ionization counter. First data from 17F ( p, $ \gamma$18Ne and 7Be ( p, $ \gamma$8B measurements are presented. [ABSTRACT FROM AUTHOR]