The Fine Structure of the Normal Scattered Molybdenum Kα-Radiation from Graphite

Abstract

IN the September issue, 1928, of the Physical Review, B. Davis and D. P. Mitchell reported an experimental investigation of the molybdenum Kα-radiation scattered by graphite with the aid of an ionisation spectrometer. In their work it is stated that the normal scattered radiation should have a much more complicated structure than the primary radiation. Instead of the one Kα₁-line they find four lines: one in the same position as the Kα₁ line and three lines shifted to the long wave-length side by 1.2; 2; 11.3 X-units respectively, the distance between the Kα₁ and Kα₂ being 4.28 X-units. As these shifts correspond more or less accurately to the $L_{{\text{III}}^{\text{-}}}$, $L_{{\text{I}}^{\text{-}}}$, and Klevel of the carbon atom, the effect reminds one of the well-known Raman effect in the optical region.