Fluorite production method
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United States of America Patent
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Apr 26, 2016
Grant Date -
May 9, 2013
app pub date -
Jun 30, 2011
filing date -
Jul 22, 2010
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Abstract
A fluorite with excellent laser durability is provided by devising a heat-treatment method for CaF2 crystal. A fluorite production method is proposed, wherein heat-treatment is carried out by providing, through compartment walls in the periphery of a fluorite crystal, a fluoride gas trap layer containing a fluoride gas-adsorbing material.
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