Satellite intensity distributions ionization

The present author proposed an the approximation method to explain the deviation of the X-ray satellite spectra intensity distributions from those described by eqs.(2),(5),(8) and (10), which we call Resonant Orbital Rearrangement (ROR) [6]. ROR was first used to explain the anomalous intensity distributions in F Ka satellite spectra which are emitted from a series of alkali-fluorides. Here resonance occurs during F Is ionization between the highest occupied molecular orbital (HOMO) in the KT. state and HOMO in the (K L +3s) state corresponding to the lowest unoccupied molecular orbital (LUMO) in the K L state. This leads to a reduction in the K L X-ray satellite intensity and to an increase in the K L X-ray diagram line intensity. Here (K L +3s) denotes the state with one vacancy in K shell and one vacancy in L shell and one electron in a 3s... 

Typical photon induced X-ray spectra, emitted from NaF, KF, RbF and CsF, are shown in Fig.l3. The intensity distributions of these spectra can be explained by taking only the shake and ROR processes into account, because they are free from the satellite X-rays emitted through the direct Coulomb ionization. Then photon induced satellite spectra can be used, in the following manner, to estimate the ion-induced or particle induced X-ray satellite intensities without any complicated calculations. This is because the excitation process in particle induced X-ray emission (PIXE) can be described by a snperposition of the direct Coulomb, the shake and ROR processes. Here the shake and ROR processes are common to both photon- and particle- induced X-ray emission spectra, allowing utilization of the same ROR probability to explain both spectra. 

In addition to the main lines in the spectrum associated with the outer valence orbitals, the calculations predict interesting satellite structures as well as the appearance of multiple structure in the inner valence region. In the inner valence region a main line may cease to exist. Its intensity can be distributed over many ionic states, giving rise to the breakdown of the orbital picture of ionization. This phenomenon has been found to be common to most molecular systems. For a thorough discussion of this phenomenon we refer to Ref. 32. 

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