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Ion source.
An example of the element Iridium

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Ion source.
This was described as a "Varian 0981-82850-302 Thoria / Iridium Ion Source". Whether this means it contains thoria (a name for thorium oxide) and/or iridium I'm not clear. I'm also not clear whether it's meant to emit iridium ions, or other kinds of ions with the iridium being the material out of which some component of it is made. I think probably the latter. It looks like all plain metal to me, but I could be mistaken. In any case, it's a fascinating bit of tangled metal obviously intended to be used inside a vacuum chamber to emit some kind of ions, and it probably contains some iridium, which makes it good enough for me to list.
Source: eBay seller dougcarol1987
Contributor: Theodore Gray
Acquired: 11 June, 2005
Text Updated: 31 May, 2006
Price: $16
Size: 3"
Purity: 0%
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