7Be in Stars and in the Laboratory

Details 7Be in Stars and in the Laboratory 7Be in Stars and in the Laboratory

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..972..215h&link_type=abstract

EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (II): Proceedings of the Carpathian Summer School of Physics 2007. AIP Conferen

Astronomy and Astrophysics

Astrophysics

Big Bang Nucleosynthesis, Neutrino Mass And Mixing, 6<=A<=19, Solar Neutrinos

Scientific paper

We discuss results and future plans for low-energy reactions that play an important role in current nuclear astrophysics research and that happen to concentrate around the region of A = 7. The 7Be(p,γ)8B and the 3He(4He,γ)7Be reactions are crucial for understanding the solar-neutrino oscillations phenomenon and the latter one plays a central role in the issue of cosmic 7Li abundance and Big-Bang Nucleosynthesis. The electron-capture (EC) decay rate of 7Be in metallic Cu host and the β--decay rate of 198Au in the host alloy Al-Au have been measured simultaneously at several temperatures, ranging from 0.350 K to 293 K. The resulting null temperature dependence is discussed in terms of the inadequacy of the often-used Debye-Hückel model for such measurements.

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