Dielectrics radiative properties

The relations given for both dielectrics and metals are for unpolarized incident radiation if polarization is important, then more detailed analysis must be used (see Refs. 1, 3,18,19). Also, the refractive index and absorption index may show spectral dependence, in which case the computed radiative properties will also be spectral in nature. 

The use of hannonic baths to model the thennal enviromnent of molecular systems does not rest only on such timescale arguments. We have seen in Chapter 3 that the radiation field constitutes an harmonic environment that determines the radiative relaxation properties of all material systems. We will see in Chapters 15 and 16 that dielectric solvents can be modeled as harmonic environments in which the harmonic modes are motions of the polarization field. In the latter case the harmonic environment picture does not rely on a short time approximation, but rather stems from the long wavelength nature of the motions involved that makes it possible to view the solvent as a continuum dielectric. 

In general, the nonradiative process of Eu(III) complex is also affected by their coordination structures in liquid media [3]. The coordination structure in organic solvent could be directly linked to performance of coordination ability of the solvent molecule, which is related to dielectric constant of solvent [4]. In this chapter, the author focus on solvent-dependent luminescence of two types of octa-coordinatd Eu(III) complexes, Eu(hfa)2(xantpo)2 and Eu(hfa)3(fBu-xantpo). Their photophysical properties are estimated using the emission quantum yield, emission lifetime, and radiative and nonradiative rate constant in acetone, acetone-rfs, toluene, chloroform, and DMF. The relationship between photophysical properties and coordination structures of octa-coordinated Eu(III) complexes will be discussed. 

The formal solutions of the equations of heat transfer in solids and radiative transfer depend on the following properties of the near-surface material the complex dielectric constant (X), thermal conductivity k (ergs per centimeter per second per Kelvin), specific heat c (ergs per gram per Kelvin), and density p (grams per cubic centimeter). The analytic theory of heat transfer at planetary surfaces begins by assuming that the temperature at any point on the surface can be expanded in a Fourier series in time ... 

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