Importance

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Abstract

A barrel epitaxial reactor having a greater batch capacity than prior art barrel epitaxial reactors which produces an epitaxial layer quality at least as good as that produced by the prior art barrel epitaxial reactors is disclosed. The batch capacity of prior art barrel epitaxial reactors is improved by increasing the reaction chamber size and increasing the radiant heat source so that a uniform temperature is maintained over a larger flat zone in the reaction chamber. Also, forced air flow from the blower of the prior art reactor is distributed so that a positive air flow is maintained along the exterior wall of the reaction chamber and consequently the wall is maintained at a uniform cold temperature relative to the temperature of the reaction chamber.

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First Claim