In reply to Jones Beene's message of Thu, 25 Apr 2013 06:38:34 -0700: Hi, I wrote:
>I don't see how physicists could possibly measure the ratio of beta+ to >electron capture reactions occurring in the core of the Sun anyway (see e.g. >http://www.sns.ias.edu/~jnb/SNviewgraphs/NuclearFusion/nucfusion.html). (Any >electron annihilation gammas created in the core would be thermalized long >before they got to the surface.) > >Perhaps the ratio is determined from fusion experiments here on Earth, where >annihilation gammas are more readily detected? Or perhaps it's just a >calculated value? Or maybe this really is a WL reaction, where a proton is >converted into a neutron momentarily while emitting a positron, and then the >neutron fuses with a free proton in time to repay the loan before the thugs >come knocking? Closer examination of John's website shows that the two reactions (beta+ & electron capture) create neutrinos of different energy, so presumably neutrino measurements were used to determine the ratio. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
