We present [1] calculation data for different characteristics of atomic processes with participation of photons and electrons: photoabsorption and electron scattering cross-sections, and probabilities of decay of vacancies formed in these processes for a big number of atoms and ions. Some attention is given also to photoionization and vacancy decay in endohedrals and to positron - atom scattering.

The calculations are performed in the frames of the best one-electron Hartree -Fock method and with account of multi-electron correlations in the Random Phase Approximation with Exchange. The influence of correlations usually is very important. The theoretical description of the processes is given briefly, but includes formulation of the basic ideas, and also key formulas.

The collected data and the methods employed in their derivations can be useful for the theoretical description of already performed experiments, and in suggesting of new ones. We produce and present newly obtained and previously collected Atomic Data.

Atomic Data are required in a number of scientific domains connected to investigation of electronic structure and of physical processes in solids and liquids, molecules and clusters, astronomical objects, solar and planet atmospheres, atomic nucleus and so on.

Our aim is to concentrate on the calculation data itself. To obtain the data, we use theoretical methods, which open the possibility of extensive calculations and at the same time are as accurate as possible. Analytical formulae are too crude. Rapid development of computing facilities permits to perform relatively accurate calculations, using rather complicated theoretical approaches.

We present data obtained in the best one-electron Hartree-Fock (HF) approximation and with account of multi-electron correlations in the frame of so-called Random Phase Approximation with Exchange- RPAE. The corrections due to the latter proved to be very important in a broad variety of atomic characteristics and processes. There are cases when corrections determined by the multi-electron nature of an atom are not too strong but still important. In these cases, we use also so-called Many-Body Perturbation Theory.

We investigate not only atoms but also some negative and positive ions. Recently great attention has been given to such atom-like objects as fullerenes and endohedrals – atoms “caged” inside a fullerene shell. As a fullerene, we will consider C₆₀ and take into account two its action – the scattering of emitted electrons and the modification of the incoming photon beam due to C₆₀ polarization.

Entirely, we consider very many different physical processes, almost everything connected to the interaction with photons, electrons and positrons.

 [1] M. Ya. Amusia, L. V. Chernysheva and V. G. Yarzhemsky, Handbook of theoretical Atomic Physics, Data for photon absorption, electron scattering, vacancies decay, Springer, Berlin, pp 806, to cite the e-book use http://dx.doi.org/10.1007/978-3-642-24752-1 Information about the print edition can be found on a homepage. The eBook is available on SpringerLink, 2012