In the previous paper, ZRI, we have discussed the properties of single scatter radiation emanating from a point source, displaced a distance e° from the inside radius r* of a cylinder wall, scattering inside the wall, and reaching a point analyte on a diameter line with the source but removed a distance eA, from the inside radius. Figure 1 shows the instrumental design. It is to be recalled that a triangle inscribed by a circle with two of its verticles defining a diameter is always a right triangle. Thus all such scattering events described above are approximately 90°. This in turn almost annihilates the electric field vector in the scattering plane and creates essentially plane polarized X-rays at the analyte. If the analyte-detector line lies perpendicular to the plane of the cylinder, scattering of the polarized source X-rays by the analyte into the detector Is also a 90° event, and being perpendicular to the first scattering plane, should essentially annihilate the source X-rays at the detector.