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Full set of Notes with Fill-Ins - San Jose State University

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Chem 155 Unit 6 Page 133 <strong>of</strong> 316A monochromator that operates in very high order iscalled:An Echelle monochromatorThe grooves are machined to reflect light at highincident angles – i and r are nearly identical and arecalled βAn echelle monochromator outperforms a Czerny-Turner monochromator in high-resolution applications:Czerny-Turner EchelleF / m 0.5 0.5Groove density 1200 / mm 79 / mmi,r or β 10° 63°R (300nm) 60,000 700,000D -1 (nm / mm) 1.6 0.15Page 133 <strong>of</strong> 316

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