High Resolution M X-Ray Emission Spectrum of Metallic Uranium (Z = 92)

Abstract

The M x-ray emission spectrum of metallic U (Z = 92) was measured with a high precision double crystal spectrometer. The binding energies and linewidths of the M4,5-levels are determined and compared with the available theoretical calculations. The results are analysed in terms of Coster-Kronig decay processes and fluctuations. The broad high-energy satellite bands accompanying the Mα1 and Mβ lines were isolated by fitting Lorentzian profiles to the main lines and analysed in terms of M5X-N7X and M4X-N6X double hole excitations created predominantly by Coster-Kronig decay processes of an M shell hole.