Relativistic energy approach

Relativistic Energy Approach to Cooperative Electron-y-Nuclear Processes NEET Effect... 

Abstract A consistent relativistic energy approach to the calculation of probabilities of cooperative electron-gamma-nuclear processes is developed. The nuclear excitation by electron transition (NEET) effect is studied. The NEET process probability and cross section are determined within the S-matrix Gell-Mann and Low formalism (energy approach) combined with the relativistic many-body perturbation theory (PT). Summary of the experimental and theoretical works on the NEET effect is presented. The calculation results of the NEET probabilities for the y Os, yy Ir, and yg Au atoms are presented and compared with available experimental and alternative theoretical data. The theoretical and experimental study of the cooperative electron-gamma-nuclear process such as the NEET effect is expected to allow the determination of nuclear transition energies and the study of atomic vacancy effects on nuclear lifetime and population mechanisms of excited nuclear levels. 

Relativistic Energy Approach to the Process of Nuclear Excitation by Electron Transition... 

Advanced Relativistic Energy Approach to Radiative Decay Processes in Multielectron Atoms and Multicharged Ions... 

Within the relativistic energy approach [21,22,26] the total probability is divided into the sum of the partial contributions, connected with decay to the definite final states of a system. These contributions are equal to the corresponding transition probabilities Pi). E.g., if > E the probability determination reduces to... 

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