Non-radiative synthesis of Be7 in solar plasma

Details Non-radiative synthesis of Be7 in solar plasma Non-radiative synthesis of Be7 in solar plasma

1998-04-09

arxiv.org/abs/nucl-th/9804020v1

J.Phys.G25:95-106,1999

Physics

Nuclear Physics

Nuclear Theory

16 pages, RevTex, LaTex-pseudo-figures are included

Scientific paper

10.1088/0954-3899/25/1/009

The nuclear reaction e + He3 + He4 ---> e + Be7 is considered at thermonuclear energies. The motion of the electron is treated within the adiabatic approximation and the He3-He4 scattering state is calculated using an effective He3-He4 potential constructed via the Marchenko inverse scattering method. The reaction rate thus obtained for solar interior conditions is approximately 10^{-4} of the corresponding rate for the radiative capture He3 + He4 ----> Be7 + gamma. However, at the conditions corresponding to the early stages of the primordial nucleosynthesis, the non-radiative fusion is five times faster than the radiative one. The importance of the non-radiative processes for the energy balance in the sun, which for electrons is totally opaque, is discussed.

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