Influence of protons on the capture of electrons by 7Be in the Sun

Details Influence of protons on the capture of electrons by 7Be in the Sun Influence of protons on the capture of electrons by 7Be in the Sun

2006-06-28

arxiv.org/abs/astro-ph/0606679v3

Phys.Rev.C75:034608,2007

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures, 1 table; version published in Phys. Rev. C 75, 034608 (2007)

Scientific paper

10.1103/PhysRevC.75.034608

The capture of electrons by the nucleus $^{7}Be$ from the three-body initial state $p+e^{-}+^{7}Be$ in the continuum is studied. On the basis of the expansion of the three-body continuum wave function in the small parameter $\epsilon\approx ({m_e}/{m_p})^{1/2}$ [$m_e$ ($m_p$) is the electron (proton) mass], the role of the protons on the electron capture is considered. The results are compared with the traditional treatment of the electron capture by the nucleus $^{7}Be$. For stars with the density and temperature like in the centre of the Sun the studied mechanism can make non-negligible contribution to the capture rate.

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