Experimental study of proton-induced nuclear reactions in 6,7Li

J. Cruz, H. Luis, M. Fonseca, Zs. S. Fülöp, G. Gyürky, F. Raiola, M. Aliotta, K. U. Kettner, A. P. Jesus, J. P. Ribeiro, F. C. Barker, C. Rolfs

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The 6Li(p,α)3He and 7Li(p,α) 4He reaction cross sections were obtained for E = 90-580 keV and E = 90-1740 keV, respectively. R-matrix and polynomial fits to the bare astrophysical S-factor confirmed, with improved accuracy, previous work data, yielding Sb(0) = 3.52 0.08 MeV b, and 55.6+0.8 -1.7 keV b for the 6Li and 7Li reactions, respectively. Therefore, the astrophysical consequences related to these two isotopes remain essentially unchanged. With the present work Sb(E) data, a reanalysis of the low energy data for different environments - Li 2WO4 insulator, Li metal, and PdLix alloys - confirms that the large electron screening effects can be explained by the plasma model of Debye applied to the quasi-free electrons in the metallic samples.

Original languageEnglish
Article number014004
JournalJournal of Physics G: Nuclear and Particle Physics
Volume35
Issue number1
DOIs
Publication statusPublished - 2008

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nuclear reactions
astrophysics
protons
free electrons
polynomials
screening
isotopes
insulators
cross sections
metals
electrons
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Experimental study of proton-induced nuclear reactions in 6,7Li. / Cruz, J.; Luis, H.; Fonseca, M.; Fülöp, Zs. S.; Gyürky, G.; Raiola, F.; Aliotta, M.; Kettner, K. U.; Jesus, A. P.; Ribeiro, J. P.; Barker, F. C.; Rolfs, C.

In: Journal of Physics G: Nuclear and Particle Physics, Vol. 35, No. 1, 014004, 2008.

Research output: Contribution to journalArticle

Cruz, J, Luis, H, Fonseca, M, Fülöp, ZS, Gyürky, G, Raiola, F, Aliotta, M, Kettner, KU, Jesus, AP, Ribeiro, JP, Barker, FC & Rolfs, C 2008, 'Experimental study of proton-induced nuclear reactions in 6,7Li', Journal of Physics G: Nuclear and Particle Physics, vol. 35, no. 1, 014004. https://doi.org/10.1088/0954-3899/35/1/014004
Cruz, J. ; Luis, H. ; Fonseca, M. ; Fülöp, Zs. S. ; Gyürky, G. ; Raiola, F. ; Aliotta, M. ; Kettner, K. U. ; Jesus, A. P. ; Ribeiro, J. P. ; Barker, F. C. ; Rolfs, C. / Experimental study of proton-induced nuclear reactions in 6,7Li. In: Journal of Physics G: Nuclear and Particle Physics. 2008 ; Vol. 35, No. 1.
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abstract = "The 6Li(p,α)3He and 7Li(p,α) 4He reaction cross sections were obtained for E = 90-580 keV and E = 90-1740 keV, respectively. R-matrix and polynomial fits to the bare astrophysical S-factor confirmed, with improved accuracy, previous work data, yielding Sb(0) = 3.52 0.08 MeV b, and 55.6+0.8 -1.7 keV b for the 6Li and 7Li reactions, respectively. Therefore, the astrophysical consequences related to these two isotopes remain essentially unchanged. With the present work Sb(E) data, a reanalysis of the low energy data for different environments - Li 2WO4 insulator, Li metal, and PdLix alloys - confirms that the large electron screening effects can be explained by the plasma model of Debye applied to the quasi-free electrons in the metallic samples.",
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AU - Fonseca, M.

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AU - Gyürky, G.

AU - Raiola, F.

AU - Aliotta, M.

AU - Kettner, K. U.

AU - Jesus, A. P.

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AB - The 6Li(p,α)3He and 7Li(p,α) 4He reaction cross sections were obtained for E = 90-580 keV and E = 90-1740 keV, respectively. R-matrix and polynomial fits to the bare astrophysical S-factor confirmed, with improved accuracy, previous work data, yielding Sb(0) = 3.52 0.08 MeV b, and 55.6+0.8 -1.7 keV b for the 6Li and 7Li reactions, respectively. Therefore, the astrophysical consequences related to these two isotopes remain essentially unchanged. With the present work Sb(E) data, a reanalysis of the low energy data for different environments - Li 2WO4 insulator, Li metal, and PdLix alloys - confirms that the large electron screening effects can be explained by the plasma model of Debye applied to the quasi-free electrons in the metallic samples.

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