The Scattering of X-rays from Paraffin, Aluminum, Copper, and Lead

Abstract

The radiation from a tungsten-target x-ray tube operated at 80 kv was filtered through 0.244 cm of aluminum and the intensities of the scattered radiations from paraffin, aluminum, copper, and lead were observed by the ionization method. The scattered intensities at angles in the range of 30\ifmmode^\circ\else\textdegree\fi{} to 120\ifmmode^\circ\else\textdegree\fi{} with the forward direction of the primary beam were compared with the scattered intensities at 90\ifmmode^\circ\else\textdegree\fi{}. Values of the intensity at 90\ifmmode^\circ\else\textdegree\fi{} for paraffin were compared with the intensity at 90\ifmmode^\circ\else\textdegree\fi{} for the other materials. The scattering from paraffin and aluminum was at an effective wave-length of 0.32A; from copper 0.26A, and from lead 0.27A. The Dirac value of the scattering from paraffin at 90\ifmmode^\circ\else\textdegree\fi{} was used as the basis for calculating the absolute values of the scattering per gram and the scattering per electron.