B-term scattering

TFe data of Popov et alm for Ag contradict the above sequence. They found that pentanol adsorbed more strongly on Ag(100) than on Ag(l 11). Similarly, Cd(0001) adsorbs less strongly than pc-Cd.661 The data for Sb and Bi are to some extent contradictory since the trend is broadly correct but with scatter, which is attributed to the crystal face specificity of space-charge effects.153 For instance, adsorption of cyclohexanol on Bi conforms to the sequence (011) > (101) > (211) > (001) >(111), while the capacitance at a - Ovaries in the sequence (001) > (011) > (211) > (101) > (111). Thus only the faces (001), (211), and (111) are in the expected order. Surprisingly, the Cd data of Lust etal. show similarities with those of Naneva etal.,212 although capacitances disagree. Thus the order of cyclohexanol adsorbability is (1010) > (0001) while the capacitance varies in the order (1010) > (1120) > (0001), i.e., the other way round. In these cases one might wonder whether the G(M-B) term is really independent of face. 

Had it not been for an interest in making direct comparisons with long-term exposures, it would be sensible to have chosen rather lower end points. If an end point of 10% change is taken for compound B, the scatter on the Arrhenius plot is increased and the predictions are 1.5 years at 40 °C and 4 years at 23 °C. However, if the 100 °C point is ignored these become 5 years at 40 °C and 35 years at 23 °C. With linear extrapolation, this is equivalent to 12 years and 84 years to reach 24% change at 40 °C and 23 °C, respectively. 

The decay of Br2 in the various inorganic solutions studied follows the expected second-order kinetics when no aqueous CO2 is present (Fig. 2, p. In the presence of CO2, there is a small pseudo-first-order component (a) which can be quantified even in the presence of the much larger B term. However, the presence of multiple decay pathways results in substantial uncertainties in the value of the a and B terms, resulting in the rather large scatter of the data. 

The B-term, which contributes when I > I3, describes interference between the probe and pump beams which sets up an oscillation in the populations pn(o) -a)) and pzaCm -o)) this causes coherent scattering of the pump beam at w which can interfere with the probe and affect its absorption. Thus, the lineshape contains two contributions, a Lorentzian curve of FWHM == 2f and depth another Lorentzian... 

Figure 10.8 Light-scattering data plotted to give slope-intercept values which can be interpreted in terms of M and B. (a) Polystyrene in methyl ethyl ketone. [From B. A. Brice, M. Halwer, and R. Speiser,/. Opt. Soc. Am. 40 768 (1950), used with permission.] (b) Polystyrene in cyclohexane at temperatures indicated. Units of ordinates are given in Example 10.4. [Reprinted with permission from W. R. Krigbaum and D. K. Carpenter,7. Phys. Chem. 59 1166 (1955), copyright 1955 by the American Chemical Society.]...

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