plutonium-238

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plutonium-238

[plü′tō·nē·əm ¦tü‚thər·dē′āt]
(nuclear physics)
The first synthetic isotope made of plutonium; similar chemically to uranium and neptunium; atomic number 94; formed by bombardment of uranium with deuterons.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
The US stopped making plutonium 238 in the 1980s, since turning to Russia for supplies.
It has detected plutonium 238, 239, 240, which are highly toxic, from
The space probe will carry 72.3 pounds of plutonium 238, the largest amount of plutonium ever hurled into space.
Plutonium 240 has a high spontaneous fission rate, plutonium 241 decays into highly radioactive Americium, and plutonium 238 has a short half-life and thus produces substantial quantities of heat.
NASA plans to launch a satellite (called Cassini) in 1997 loaded with 72.3 pounds of plutonium 238 [see Karl Grossman and Judith Long, "Apollo Out-takes," September 11, 1995].
The 1989 space probe, Project Galileo, is to contain 49.25 pounds of plutonium dioxide, most of that plutonium 238, its most radioactive isotope.