Systematics of autoionization widths of doubly excited states of atoms

We analyze the autoionization widths of doubly excited states of two-electron atoms using the (K,T${)}^A$ classification scheme introduced previously. It is shown that the widths of all the states along each truncated rotor series are comparable except for the last two states. This novel systematics is interpreted qualitatively in terms of the molecular or the correlated motion of the two electrons, except for the last two states which are explained in terms of the independent-electron model.