Four fundamental methods are described for recording the intensity of radially symmetric scattered radiation as a function of scattering angle.
The first and second arrangements utilize the conventional incident pencil of radiation. The first scheme scans a diameter of the scattering pattern in the customary fashion. The second scheme scans with axial translation of a circular ring aperture.
The third scheme uses a divergent incident beam on a ring specimen and scans axially with a pinhole detector. The fourth scheme employs a beam from a ring source converging onto the specimen and records the intensity on the axis as a function of the angle of convergence, as the specimen is translated axially.
The third arrangement is illustrated with an example which demonstrates its feasibility.
K. L. YUDOWITCH, "Recording Radially Symmetric Scattering," J. Opt. Soc. Am. 43, 50-50 (1953)
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