A consistent semimicroscopic model for the description of elastic and inelastic scattering of composite nuclear particles with full finite-range effective N N interaction is developed. With the exchange parts of both the optical potential and inelastic form factor calculated from first principles, the role of exchange N N correlations in these processes is studied in detail. The model simultaneously reproduces the e-and heavy-ion scattering data with good accuracy.

A theoretical study of the higher approximation effects in the processes of one-conversion de-excitakion of the excited nuclear state has been carried out in the present paper for the system : nucleus plus electronic shell. The processes of de-excitation over intermediate electron-nucleus states (the so-called "electron-nucleus bridge", being referred to as ENB in what follows) are considered in detail. The optimal conditions for ENB effect manifestation are discussed, numerical estimate6 being carried out in some cases. One-conversion nuclear de-excitation associated with MO-transition, strictly forbidden in the usual approximation, is a striking example of ENB. Such de-excitation probability proves t o be rather large (for example, it equals 2 . lo4 sec-l for 2 = 50 and for the transition energy 1 MeV, when the single-particle model is used).

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