Traditionally, radiation-scattering experiments are conceived in terms of cylindrical geometry where the symmetry axis is the line between the source and the target. When the target becomes extended, as is the case in many real-life measurements, the analysis or the prediction of spectra becomes difficult. By definition of the axis of symmetry as being between the source and the detector, the extended target can be described in toroidal geometry with the surface of each toroid being a contour of constant scattering angle. With the scattering cross section constant over each contour, the calculation of total scattering intensities is greatly simplified. © 1988 The American Physical Society.
CONTOURS OF CONSTANT SCATTERING ANGLE / A. L., Hanson; Gigante, Giovanni Ettore; M., Meron. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 61:2(1988), pp. 135-137. [10.1103/physrevlett.61.135]