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- Newsgroups: sci.space
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rpi!utcsri!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: RTG's on the Lunar Module
- Message-ID: <C0JrqM.n1I@zoo.toronto.edu>
- Date: Fri, 8 Jan 1993 18:08:45 GMT
- References: <1993Jan7.144516.20330@cam-orl.co.uk> <C0IADo.B1p@zoo.toronto.edu> <1993Jan8.165057.3965@elroy.jpl.nasa.gov>
- Organization: U of Toronto Zoology
- Lines: 31
-
- In article <1993Jan8.165057.3965@elroy.jpl.nasa.gov> pjs@euclid.jpl.nasa.gov writes:
- >> The radiation hazard from plutonium 238 is insignificant; it's pretty much
- >> a pure alpha emitter, and human skin stops alpha particles completely. (A
- >> sheet of paper will do likewise.) You don't want to eat the stuff...
- >
- >Somewhere in the recesses of my mind lies a memory of a scientist
- >who offered to eat some plutonium if the journalist covering the
- >event would eat the same amount of caffeine. No takers, obviously,
- >but does this mean that it would be safe to eat plutonium?
-
- Plutonium 239 would not be very toxic if eaten as the metal, I would think.
- (Whereas caffeine in bite-and-chew quantities would be lethal.) I don't
- know as I'd call it "safe", but it might not be certain death. Inhaling it
- into the lungs as fine dust is the quick way to die from plutonium. The
- metal probably wouldn't be absorbed very efficiently when eaten.
-
- Eating any heavy metal isn't exactly recommended, mind you.
-
- >...it should be passed in due course with only the mucus coating
- >the alimentary canal getting irradiated.
-
- Most of the body isn't radiation-sensitive enough to be hurt much by
- a relatively long-lived isotope like Pu239. As I recall, what kills you
- is getting it into your bone marrow.
-
- Eating Pu238 wouldn't be any worse in terms of radiation, but it would
- be extremely painful and possibly fatal because the stuff is *hot*.
- Thermally, not radioactively.
- --
- "God willing... we shall return." | Henry Spencer @ U of Toronto Zoology
- -Gene Cernan, the Moon, Dec 1972 | henry@zoo.toronto.edu utzoo!henry
-