Plasma Crucible Sealing
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United States of America Patent
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N/A
Issued Date -
Apr 30, 2015
app pub date -
May 3, 2013
filing date -
May 10, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A plasma crucible (92) has a through bore (93) and two tubes (981,982) butt sealed on to the end faces (901,902) of the crucible. One (981) of the tubes is closed prior to the filling of the crucible. The tube is tipped off and worked in a glass lathe to form it to have a flat end (983). After evacuation, dosing and gas fill, the end (983) is heated to drive off impurities in the dose, with its active constituent condensing within the bore (93). Then, the other tube (902) is tipped off in the similar manner.
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