Low-energy M1 strength in the 7Li(ρ, γ0)8Be reaction

Attila Csótó, Steven Karataglidis

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Abstract

The 7Li(ρ, γ0)8Be reaction is studied in a microscopic cluster model. All relevant subsystem properties are well reproduced. The calculated astrophysical S-factor is in good agreement with the experimental data, although some M1 strength is missing in the 1 + ; 1 resonance region, and there is no contribution from the 1+ ; 0 state. Our model predicts, in contradiction to experiment, a dominant I = 1 channel spin contribution to the cross section. We estimate an M1 strength of 3.5% at 80 keV. By assuming the experimental resonance parameters and channel spin ratio for the first 1+ state that M1 strength is 6.3%, in good agreement with an R-matrix analysis.

Original languageEnglish
Pages (from-to)62-71
Number of pages10
JournalNuclear Physics A
Volume607
Issue number1
DOIs
Publication statusPublished - Sep 9 1996

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Keywords

  • Cluster model
  • Nuclear reactions Li(ρ, γ)Be
  • Shell model
  • Solar neutrinos

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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