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

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

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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.

Original languageEnglish
Article number014004
JournalJournal of Physics G: Nuclear and Particle Physics
Volume35
Issue number1
DOIs
Publication statusPublished - 7 Feb 2008
Event3rd Europhysics Conference on Nuclear Physics in Astrophysics (NPA3) - Dresden, Germany
Duration: 26 Mar 200731 Mar 2007

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    Cruz, J., Luis, H., Fonseca, M., Fülöp, Z., Gyürky, G., Raiola, F., Aliotta, M., Kettner, K. U., Jesus, A. P., Ribeiro, J. P., Barker, F. C., & Rolfs, C. (2008). Experimental study of proton-induced nuclear reactions in 6,7Li. Journal of Physics G: Nuclear and Particle Physics, 35(1), [014004]. https://doi.org/10.1088/0954-3899/35/1/014004