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- Path: sparky!uunet!noc.near.net!hri.com!spool.mu.edu!torn!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Newsgroups: sci.space
- Subject: Re: *** BUSSARD RAMSCOOP ***
- Message-ID: <C0IB07.BBL@zoo.toronto.edu>
- Date: 7 Jan 93 23:09:42 GMT
- References: <93007.120340DOCTORJ@SLACVM.SLAC.STANFORD.EDU>
- Organization: U of Toronto Zoology
- Lines: 30
-
- In article <93007.120340DOCTORJ@SLACVM.SLAC.STANFORD.EDU> Jon J Thaler <DOCTORJ@SLACVM.SLAC.STANFORD.EDU> writes:
- >> Kilogram quantities of antimatter are quite adequate for early interstellar
- >> probes, given modest vehicles... it looks plausible.
- >
- >A reality check:
- >This is about 13 orders of magnitude larger than the total number of
- >antiprotons ever created and stored (about 10**14)
-
- Reality check right back at you: plot human antimatter production capacity
- versus time. Interesting graph, no? Sure, it's limited right now... but
- it's growing fast.
-
- If we mounted a major effort, we could probably be test-firing antimatter
- rocket engines within ten years. There are *NO* fundamental barriers that
- anyone has been able to find. It's purely a matter of scaling up and
- optimizing the hardware -- the existing accelerators are optimized for
- production of Nobel prizes, not bulk antimatter -- and solving assorted
- straightforward engineering problems of handling and storage. The idea
- has been investigated in depth; no show-stoppers have appeared.
-
- A production setup the size of the Hanford works could make enough
- antimatter to open up the solar system. Interstellar propulsion is
- harder. Kilogram quantities are probably going to have to be made in
- space, not so much for handling reasons (although those aren't trivial)
- as because of the sheer amounts of *energy* needed. It would be a huge
- project, but there's no fundamental problem; we could start designing
- hardware tomorrow if it were urgent enough.
- --
- "God willing... we shall return." | Henry Spencer @ U of Toronto Zoology
- -Gene Cernan, the Moon, Dec 1972 | henry@zoo.toronto.edu utzoo!henry
-