Chapter 3
Figure 3.5 shows the schematic diffusion result of emulsion with oil as
continuous phase, water as dispersed phase and separated bulk water. According
to Eq. [3.23], the NMR signal attenuation of the emulsion is the combination of
continuous oil phase, dispersed water phase and bulk water phase. For restricted
diffusion, the apparent diffusivity of dispersed water phase is much smaller than
the continuous oil or bulk water phase. Thus at initial time, most of the attenuation
corresponds to continuous oil or bulk water phase; if the magnetic gradient is
large enough, most of the signal attenuation corresponds to dispersed phase.
g2(104 G2∕cm2)
Figure 3.5 Schematic diffusion results of emulsion
The determination of the drop size distribution consists of performing a
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