Abstract
Total as well as partial widths for autoionization and radiative decay of multiply charged helium-like ions (Z>or=8) are investigated along all spectral series for doubly excited ridge states (N=n). The propensity rules derived from the structure of the two-particle wavefunctions are discussed in a detailed numerical study within the framework of configurational interaction. The dependence of the total widths on the relevant quantum numbers is analysed, too, but scaling laws are found not to be universal in the sense that they depend on the actual series of states under consideration. Our results are compared with available quantum and classical calculations as well.
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