In reply to Bob Cook's message of Wed, 20 Jan 2016 19:26:51 -0800: Hi, [snip] >I agree with Robin. He gradually escapes to space, including any He-3 that >is near the surface. As Robin indicates, He-4 is produced in quantities >greater than He-3 I believe. Hence, with minimal supply of He-3, one would >expect more He-4 just based on the relative production rate. > >Bob Cook
Also, because of it's lower mass, He3 escapes from the atmosphere more easily. However there is also a continuous supply of He3 from the Sun (hence the deposits in Lunar regolith), so the balance is bit more complicated. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
