Chapter 3
gradient pulse duration δ is 3 ms, range of magnetic gradient is 0 - 40 G∕cm. In the
figure, water droplets with different drop diameters have different signal
attenuation, which are the bases of getting drop size distribution from diffusion
results. Droplets with diameter from 10 to 30 μm have the largest attenuation
differences and most sensitive to the data fitting.
Figure 3.4 Predicted attenuation of water droplets with different drop diameters
For emulsions with a finite distribution of spherical droplet sizes, the
attenuation ratio of the emulsified phase (Remu∣) can be calculated as the sum of
the attenuation ratios Rsp(a), weighted by the probability Offinding drops with such
sizes in the dispersion [16]:
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