He3 is rare isotope, which is necessary for research at
ultra-low tmperatures (below T = 1K).
2007-05-10 09:56:35 · 4 answers · asked by Alexander 6 in Science & Mathematics ➔ Physics
It was produced by stars and the big bang. Some came from the Sun via solar wind. Most was present when the world formed.
2007-05-10 10:03:16 · answer #1 · answered by novangelis 7 · 0⤊ 0⤋
It was here to start with or arrived from space. Stars make He3 during fission and there was some produced in the early universe. A tiny bit comes from beta decay of tritium.
2007-05-10 17:04:46 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The only place on Earth where commerical quantities of 3He are obtained is in the helium gas fields of Texas, ordinary helium being rare as it is. However, China has already announced plans years ago to send men to the moon to harvest 3He from the lunar regolith. After Russia's offer to join the US in a return to the moon has been rebuffed by the US, Russia and China are now joining forces to go to the moon. The US belatedly has finally decided to go back to the moon as well for the purpose of harvesting 3He. We're talking about extraordinary billions of dollars in this new lunar race to get this 3He, so I'll leave you guessing why. Clue: It's not for ultra-cold research.
2007-05-10 18:25:11 · answer #3 · answered by Scythian1950 7 · 0⤊ 0⤋
There are wells in the mid US that contain about 1% He of which HE3 is ,00013 %
2007-05-10 17:03:56 · answer #4 · answered by Gene 7 · 1⤊ 0⤋