A flow velocity field that has a "sink" drives the core He-3 nuclear reacti
on diffusion system to instability to jump from the original state to the n
ew one, in which the total amout of He-3 is enhanced. This alters the origi
nal competition between pp I and pp II Spp III chains, and thus potentially
suppresses the production of both the Be-7 and B-8 neutrino fluxes.