Section III. Nuclear physics and astrophysics
Radioactive beam studies of cosmological interest

https://doi.org/10.1016/0168-583X(89)91031-8Get rights and content

Abstract

Experimental efforts by the LLNL/Ohio State radioactive ion beam collaboration are described. We are presently focusing on some reactions which are of great importance in the newly proposed inhomogeneous big bang cosmological models [G.M. Fuller, G.J. Mathews and C.R. Alcock, in: Origin and Distribution of the Elements, ed. G.J. Mathews (World Scientific, Singapore, 1987)]. Specifically we are using our system to make beams of 8Li for measurements of the 8Li(d, n)9Be and 8Li(a, n)11B cross sections. These are the key reactions which determine the production of heavy (A > 12) elements during the era of big bang nucleosynthesis, and thus the initial composition of stars and subsequent stellar isotope production. Plans for future experiments, including the measurement of the 7Be(p, γ)8B cross section will be discussed.

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Cited by (2)

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    2008, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Citation Excerpt :

    Active interest in nuclear astrophysics reaction studies using accelerated RIB coincided with the award of the 1983 Nobel Prize in Physics to William A. Fowler “for his theoretical and experimental studies of the nuclear reactions of importance in the formation of the chemical elements in the universe” [3]. In the 1980s, some astrophysical reaction studies were already being performed with radioactive beams produced by projectile fragmentation [4–7], however, the existing facilities could not meet the intensity requirements of many potential experiments. The requirement for higher intensity radioactive beams soon resulted in a proliferation of workshops [8–11], design studies [12,13] and facility proposals [14,15] based on using intense primary beams irradiating thick ISOL targets to produce intense RIB that could subsequently be accelerated using a second dedicated accelerator.

  • Synthesis of light elements

    1991, Nuclear Inst. and Methods in Physics Research, B

Work performed under the auspices of the US Department of Energy by the Lawrence Livermore National Laboratory under contract number W-7405-ENG-48 and of the NSF under grant number PHY-86-00749.

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Permanent address: Department of Physics, Department of Astronomy, Ohio State University, Columbus, OH 43210, USA.

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