Folded-path optical analysis gas cell
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United States of America Patent
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Aug 8, 1995
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N/A
app pub date -
Feb 25, 1994
filing date -
Feb 25, 1994
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Abstract
A folded-path gas cell employs an elliptical concave mirror in confronting relationship to two substantially spherical concave mirrors. At least one of the spherical mirrors, and usually both, are formed with an added cylindrical component to increase orthogonal focii coincidence and thereby to increase the radiation energy throughput characteristic of the cell.
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