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another-someone He-3 as you have said is a nuclear fusion reactor. scientist on earth tried to fuse He-2 with hydrogen to model the power of the sun and to see if we could use the same nuclear fusion process to power the needs of the Earth but one the scientists realized that the neutrons produced from the latter fusion reaction would simply destroy the reaction vessel being used. another scientist, however, realized that using He-3 and isotope of He-2 wouldnt creat the problem mentioned, they realized that they were traces of He-3 in the samples of rocks that had been brought back from the first trip to the moon and thats where the story of going back begins. we could argue that we're not only using up the resources on Earth but are planning to destroy any life that may possibly exist on the moon?? very controversial i believe!! seany as you've correctly pointed out we ARE going to be using the resources much faster and with less concern!!!!!! but the sucess of the mission to the moon could put in dengre not only us but the moon. its pretty sad i think
More abundant helium-3 is thought to exist on the Moon (embedded in the upper layer of regolith by the solar wind over billions of years) and the solar system's gas giants (left over from the original solar nebula), although still in low quantities (28 ppm of lunar regolith is helium-4 and 0.01 ppm is helium-3).Helium-3 undergoes the following aneutronic fusion reaction, among others, although this is the one most promising for power generation: 2H + 3He → 4He (3.7 MeV) + p (14.7 MeV)The appeal of helium-3 fusion stems from the nature of its reaction products. Most proposed fusion processes for power generation produce highly energetic neutrons which render reactor components radioactive with their bombardment, and power generation must occur through thermal means. In contrast, helium-3 itself is non-radioactive. The lone high-energy proton produced can be contained using electric and magnetic fields, which results in direct electricity generation.
2H + 3He → 4He (3.7 MeV) + p (14.7 MeV)
Did you mean, "Interestingly enough, it's not harmful at all" ?
I persume there is a common factor between the atmosphere of the moon and the earth that keeps He-3 whithin the planets' surface???
So, He3 is the new NASA excuse to go to the moon and make plants there?Who they want to convince? Not me, at least.
Quote from: lightarrow on 19/04/2007 22:10:06So, He3 is the new NASA excuse to go to the moon and make plants there?Who they want to convince? Not me, at least.Given we do not yet have any working fusion plant, I think it a little premature myself to start speculating about the sources of available fuel supply.Not sure how much of this speculation is actually by NASA, and how much by others trying to argue on behalf of NASA (maybe when I have the time I should trawl through the NASA web site and see what they say for themselves, rather than what other's say on their behalf).