The S(E) factor of7Li(p, γ)8Be and consequences for S(E) extrapolation in7Be(p, γ0)8B

D. Zahnow, C. Angulo, C. Rolfs, S. Schmidt, W. H. Schulte, E. Somorjai

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Excitation functions and forward-backward anisotropies have been measured for the7Li(p, γ)8Be capture reaction over the proton energy range Ep=100 to 1500 keV, using a 4π summing crystal and Ge(Li) detectors, respectively. The data show at all energies the presence of El and M1 capture amplitudes arising from the direct capture (DC) process and the ER=441 and 1030 keV resonances, respectively. Due to the observed DC process, the present data increase significantly the reaction rates (up to a factor of 110) compared to values given in the compilation. The data and their analyses remove the recent criticism on DC model calculations, which had implied a significant reduction in the extrapolated S(E) factor for7Be(p,γ)B and thus in the predicted flux of high-energy solar neutrinos; thus, the solar neutrino problem is still with us.

Original languageEnglish
Pages (from-to)229-236
Number of pages8
JournalZeitschrift für Physik A Hadrons and Nuclei
Volume351
Issue number2
DOIs
Publication statusPublished - Jun 1995

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solar neutrinos
extrapolation
proton energy
reaction kinetics
anisotropy
energy
detectors
excitation
crystals

Keywords

  • 25.40

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

The S(E) factor of7Li(p, γ)8Be and consequences for S(E) extrapolation in7Be(p, γ0)8B. / Zahnow, D.; Angulo, C.; Rolfs, C.; Schmidt, S.; Schulte, W. H.; Somorjai, E.

In: Zeitschrift für Physik A Hadrons and Nuclei, Vol. 351, No. 2, 06.1995, p. 229-236.

Research output: Contribution to journalArticle

Zahnow, D. ; Angulo, C. ; Rolfs, C. ; Schmidt, S. ; Schulte, W. H. ; Somorjai, E. / The S(E) factor of7Li(p, γ)8Be and consequences for S(E) extrapolation in7Be(p, γ0)8B. In: Zeitschrift für Physik A Hadrons and Nuclei. 1995 ; Vol. 351, No. 2. pp. 229-236.
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