Lucent plasma crucible
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United States of America Patent
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Jun 11, 2013
Grant Date -
Oct 28, 2010
app pub date -
May 16, 2010
filing date -
Nov 16, 2007
priority date (Note) -
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Abstract
A lucent plasma crucible having a closed body for enclosing a fill material filled in a void formed within the closed body and enclosed by the closed body, the fill material being excitable by microwave energy to generate a light-emitting plasma. The crucible is dimensioned to have low order TE or TM microwave mode properties. The orders of the modes are 0, 1 or 2. Crucibles may be regular or irregular in shape. For circular cylindrical crucibles having diameter (d) in cm, length (l) in cm, and operating frequency (f) in MHZ, (d/l)2 is between 0 and 100, and (d×f)2 is between 0 and 2×109. Also 0<(d/l)2<20 and 0<(d×f)2<1.5×109 may be used.
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