Double L-shell ionization Kα satellites in electron-excited X-ray emission spectrum of metallic cobalt

Abstract

The Kα5−8 satellite spectrum of metallic cobalt, excited by a 25 keV electron beam was recorded photographically on a 40 cm bent crystal spectrograph of the Cauchois-type. Three new satellites were observed at 1.7747, 1.7691, and 1.7634 Å (1 Å = 10−10 m). These are identified as α5, α6, and α7, respectively, and assigned mainly to the 2D5/2 – 2D5/2, 2P3/2 – 2D5/2, and 2P1/2 – 2D3/2 transitions, respectively, of 1s−12p−2 – 2p−3 array.