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- This method of scaling the diffusion coefficients for the principal axes allows physically reasonable diffusion coefficients to be tested. We could have simply chosen three diffusion coefficients at random, without regard to the probe shape, although the outcome would have been less meaningful
- Microsoft Excel 98, Microsoft Corporation 1998
- The relationships that allow these order parameters to be evaluated are described in detail elsewhere (see for example Ref. 5-7 [8]) The optical density observed when the probe beam is polarized perpendicular to the excitation beam, as a function of time, is given by: OD ⊥ (t) = {1/6(P(t)−1/2(OD = (t))}. See [7].
- Using the D0=0.02 au the diffusion coefficients for the principal axes can be calculated: DL=0.02212 au; DM=0.00496 au; and DS=0.00546 au
- Technically, only one additional degree of freedom is required to fit a single exponential decay of dichroism (or anisotropy) data. P(t) is eliminated using the dichroic ratio or may be evaluated separately using magic angle data. The projections of the TMV onto the specific rotation axes can be determined a priori from theory or using symmetry considerations. However, in practice the evaluation of dichroic data generally requires two additional degrees of freedom because the observed initial dichroism (or anisotropy) is rarely as large as theory predicts. The linked exponential model also requires one additional degree of freedom