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

Attila Csótó; Steven Karataglidis

doi:10.1016/0375-9474(96)00229-1

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

Attila Csótó, Steven Karataglidis

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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 language	English
Pages (from-to)	62-71
Number of pages	10
Journal	Nuclear Physics A
Volume	607
Issue number	1
DOIs	https://doi.org/10.1016/0375-9474(96)00229-1
Publication status	Published - 9 Sept 1996
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/0375-9474(96)00229-1

Cite this

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

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.",

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AB - 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.

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KW - Nuclear reactions Li(ρ, γ)Be

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KW - Solar neutrinos

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