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- Newsgroups: sci.space
- Path: sparky!uunet!cs.utexas.edu!torn!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: *** BUSSARD RAMSCOOP ***
- Message-ID: <C0GBp1.L9o@zoo.toronto.edu>
- Date: Wed, 6 Jan 1993 21:29:24 GMT
- References: <C0CKyt.7o0@zoo.toronto.edu> <wwLXwB4w165w@tradent.wimsey.bc.ca> <1993Jan6.190716.5077@mksol.dseg.ti.com>
- Organization: U of Toronto Zoology
- Lines: 24
-
- In article <1993Jan6.190716.5077@mksol.dseg.ti.com> mccall@mksol.dseg.ti.com (fred j mccall 575-3539) writes:
- >I didn't get the impression that that was what he meant. After all,
- >if you have antimatter to use in heating the bulk of your exhaust
- >products, why do you need fusion? ...
-
- There have been serious proposals, actually, to use antiprotons to do
- the heat-and-compress trick for fusion. The machinery needed for this
- is (probably) a whole lot lighter than for laser-ignited fusion, making
- it much more practical for rocketry.
-
- However, (a) proton-proton fusion is well beyond what this technique can
- easily achieve, and (b) Fred is correct, that wasn't what I was talking
- about.
-
- >yuou couldn't cruise forever, but I wouldn't think it would require
- >amounts of anti-matter that would seem ridiculously large, given the
- >scale of such a vehicle.
-
- Kilogram quantities of antimatter are quite adequate for early interstellar
- probes, given modest vehicles. I don't have numbers for the antimatter-
- fuelled ramjet on hand, but it *has* been studied and it looks plausible.
- --
- "God willing... we shall return." | Henry Spencer @ U of Toronto Zoology
- -Gene Cernan, the Moon, Dec 1972 | henry@zoo.toronto.edu utzoo!henry
-