A mixed solar core, solar neutrinos and helioseismology

We consider a wide class of solar models with mixed core. Most of these models can be excluded as the sound speed profile that they predict is in sharp disagreement with helioseismic constraints. All the remaining models predict (8)B and/or (7)Be neutrino fluxes of at least as large as those of SSMs. In conclusion, helioseismology shows that a mixed solar core cannot account for the neutrino deficit implied by the current solar neutrino experiments. (C) 1998 Elsevier Science B.V