Iridium_clad_GPHS_pellet.jpg

Summary

Description Iridium clad GPHS pellet.jpg	English: Pu-238 fuel pellet in its protective iridium metal cladding, as used in the General Purpose Heat Source (GPHS). The photograph shows the equatorial tungsten arc weld and the iridium frit-vent at the pole, which releases helium from the alpha decay of plutonium.
Date	26 February 2012
Source	http://solarsystem.nasa.gov/rps/types.cfm
Author	U.S. Federal Government

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