Feb18_2005_2pp

Feb18_2005_2pp - No Class on Monday(Presidents Day Exam#1...

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1 February 18, 2005 ¾ No Class on Monday (Presidents Day)! / ¾ Exam #1 ¾ Solution Key will be posted soon ¾ Graded Exams returned next Wednesday ¾ Who Was Jablonski? ¾ Alexander Jablonski (1898-1980) ¾ “The Father of Fluorescence Spectroscopy” ¾ http://micro.magnet.fsu.edu/optics/timeline/people/jablonski.html 2 Jablonski Diagram Absorption (10 -15 s) Vibr. Relax. (10 -12 s) Internal Conversion Fluorescence (10 -8 s) Intersystem Crossing Phosphorescence (>10 -3 s) Quenching
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Spectroscopy: Instrumentation Chem 221 Instrumental Analysis Spring 2005 4 Spectrometer Configuration Source Sample λ Selector Detector Signal Proc. Readout Block Diagram: •Continuum •Line I o I •Dispersive •Non-Dispersive •Liquids •Gases •Solids •Single-Channel •Multi-Channel
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5 Line Sources Most line sources rely on
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