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Lorentzian band shape

This band shape is described by the function:
F ν − ν 0 = 1 π γ ( ( ν − ν 0 ) 2 + γ 2 ) −1
where v 0 is the mean band position, γ is the half band width at half maximum, and F ( ν − ν 0 ) is the frequency distribution function.
PAC, 1996, 68, 2223 (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2252
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
Last update: 2014-02-24; version: 2.3.3.
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