extinction coefficient


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extinction coefficient

[ek′stiŋk·shən ‚kō·i‚fish·ənt]
(analytical chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
where k is the extinction coefficient and R is the optical reflectance.
From above absorbances the standard absorptivity A (1% 1cm) and molar extinction coefficient e were calculated which would be used to determine the drug content of dosage forms.
If the extinction coefficient of the incoherent layer ([[kappa].sub.i]) is much smaller compared to the real part ([n.sub.i]) of complex refractive index at wavelength of interest (e.g., 10000 * [[kappa].sub.i] [much less than] [n.sub.i]; at d = 1 mm), we propose to include such incoherent layer in rigorous simulation in the following way.
To study the shielding of the gravitational field in analogous to the shielding of the electromagnetic field, Majorana [5] in 1920 modified the Newtonian gravitational field of an object with a nonzero extinction coefficient h [not equal to] 0 as
The found values of the "(lambda)max" and the molar extinction coefficient "e" of the dye were 467 nm and 3.4x10 mol cm respectively.
where [I.sub.0] is the initial light intensity, I is the light intensity after passing through a layer of fog of thickness x, [tau] is the transmittance, and a is the extinction coefficient (fog density).
The main objective of analysis was to compare the values of fire parameters (HRR, CO concentration, extinction coefficient etc.) selected during the combustion of non-impregnated and impregnated pine timber using two above mentioned fire retardants and employing two methods.
The refractive index n and the extinction coefficient k as well as the thickness d of polycrystalline Ti:[Cu.sub.3]N thin films studied here were determined from transmittance data by only using PUMA approach and code described by Birgin et al.
Depending on the definition of the optical density (OD = [epsilon][H]l, where l is the cell length, and [epsilon] is the extinction coefficient) the concentration [H] in the above equation can be replaced by the optical density OD.
where S is visibility, K is a proportionality constant, and [alpha] is the extinction coefficient. K is 3 for reflecting signs and 8 for illuminated signs.
Even so, he is used in composite resins by possessing larger extinction coefficient that CQ.