The K Auger Spectrum

The fine structure of the K Auger spectrum is discussed and the positions and intensities of the K-LL and K-LM Auger lines calculated for different values of Z using a non-relativistic theory and assuming intermediate coupling between the two inner shell vacancies of the atom in the final states. In regions of intermediate atomic number the usual six-line K-LL spectrum expected on the basis of j-j coupling is modified into a nine-line spectrum and the relative intensity of the various lines varies markedly with Z. The effect of inter-configuration terms on the K-LL spectrum is also discussed. The observed position and relative intensities of the K-LL lines can be understood when reasonable allowance is made for relativistic effects but the interpretation of the rather meagre experimental data on the K-LM spectrum is less clear, although there is qualitative agreement with the theoretical predictions.

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