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Here's a question along those lines: What happens to a large body of say a Colonies Drinking Water if its used as Radiation Shielding? For example (and please excuse the OT nature of this thread) if a below the surface habitat had a cavern overhead filled with a large amout of water and it had a dual use as drinking/agricultural supply as well as a mass to aid with blocking unwanted radiation- what would happen to the water itself when exposed to said radiation? Would elecrolysis be the the main problem? Perhaps ionization or the formation of 'Heavy Water"? (And would that be a problem?) TBerk |
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TBerk wrote:
Here's a question along those lines: What happens to a large body of say a Colonies Drinking Water if its used as Radiation Shielding? For example (and please excuse the OT nature of this thread) if a below the surface habitat had a cavern overhead filled with a large amout of water and it had a dual use as drinking/agricultural supply as well as a mass to aid with blocking unwanted radiation- what would happen to the water itself when exposed to said radiation? Would elecrolysis be the the main problem? Perhaps ionization or the formation of 'Heavy Water"? (And would that be a problem?) It wouldn't be very efficient to transport large quantities of water versus recycling it. Still the idea has merit. Formation of heavy water? I don't think so! |
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TBerk wrote:
Here's a question along those lines: What happens to a large body of say a Colonies Drinking Water if its used as Radiation Shielding? Very little provided that it is reasonably pure. You just need enough of it to provide adequate shielding. Sodium in sea or brackish water might be a bit of a problem (neutron activation makes it into a nasty radioisotope). Drinking water would be OK, deionised would be better. For example (and please excuse the OT nature of this thread) if a below the surface habitat had a cavern overhead filled with a large amout of water and it had a dual use as drinking/agricultural supply as well as a mass to aid with blocking unwanted radiation- what would happen to the water itself when exposed to said radiation? Would elecrolysis be the the main problem? Perhaps ionization or the formation of 'Heavy Water"? (And would that be a problem?) You would see a faint ghostly blue glow from Cherenkov radiation - particles passing through the water travelling faster than the speed of light in the medium shed energy in the electromagnetic equivalent of a sonic boom. Not much else would happen. Astronauts have even seen such flashes in their eyes as cosmic rays pass through them. Regards, Martin Brown |
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Martin Brown wrote: TBerk wrote: Here's a question along those lines: What happens to a large body of say a Colonies Drinking Water if its used as Radiation Shielding? Very little provided that it is reasonably pure. You just need enough of it to provide adequate shielding. In this model it is an enourmous amount. Concider a small lake or so. There are some variables that dictate how much is 'enough'. There is likely to be some amount of bedrock or other earthen material above it also adding to the shielding. Sodium in sea or brackish water might be a bit of a problem (neutron activation makes it into a nasty radioisotope). Drinking water would be OK, deionised would be better. snippage You would see a faint ghostly blue glow from Cherenkov radiation - particles passing through the water traveling faster than the speed of light in the medium shed energy in the electromagnetic equivalent of a sonic boom. Not much else would happen. Astronauts have even seen such flashes in their eyes as cosmic rays pass through them. Regards, Ø Martin Brown OK. Thx Martin And Sam- I'd think in a Colony of this sort the idea would be to make use of water already there as opposed to transporting it. I'm envisioning a great big cavern, perhaps sealed on the inside with a ceramic type material to avoid too much leakage into the surrounding stone, and filled with distilled H2O. TBerk |
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"Space Settlements: A Design Study"
NASA SP-413, 1977 Edited by: - Richard D. Johnson, NASA Ames Research Center and - Charles Holbrow, Colgate University Basically, packages of material are accelerated from the lunar surface via an electrical rail gun to a Langrangian point, where processing of the material takes place. A torus habitat is with made from the aluminumand titanium, and the slag is formed into a passive shield wall a few feet outside the torus. A mirror like a giant CD floats above the torus to direct sunlight onto the hub, where a ring of mirrors redirect the light into the transparent, hubward side of the torus. The torus is about a kilometer in diameter. The book goes into a cylindrical design, too. Interesting, thought-provoking read. It won't happen in my lifetime. On Tue, 28 Feb 2006 23:40:01 GMT, wrote: Currently as a bit of a space fantic I have spent a great deal of time reseaching space colony technoloies and ideas. As well the technologies to get us there. I have some great ideas based on that reseach. If anyone is interested please let me know. ============= - Dale Gombert (SkySea at aol.com) 122.38W, 47.58N, W. Seattle, WA http://flavorj.com/~skysea |
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