diffraction halo

diffraction halo

n.
The hazy colorless region that surrounds red blood cells viewed under a microscope.
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References in periodicals archive ?
It is only possible to notice a diffraction halo, evidencing the amorphous state in this sample, and confirming the vitreous aspect.
A broad diffraction halo in the XRD pattern indicates the formation of amorphous phase in the as-cast sample (as shown in Figure 3(a)).
The PAn shows a broad amorphous diffraction halo in the 2[theta] range of 13-26[degrees] Similarly, the Si[O.sub.2] exhibits another broad amorphous diffraction halo in the 2[theta] range of 17-32[degrees].