3 papers
physics.atom-ph2006
The nonrelativistic limit of the second order S-matrix element for the elastic scattering of photons by K-shell bound electrons
A. Costescu, S. Spanulescu, C. Stoica
In this paper, the right expressions of the fully nonrelativistic K-shell Rayleigh scattering amplitudes and cross-sections are obtained by using the Coulomb Green function method.…
physics.atom-ph2006
The total cross-sections for the photoeffect for 2S-subshell bound electrons and pair production with the created electron in the 2S subshell for photon energies above 1 MeV
A. Costescu, S. Spanulescu, C. Stoica
Considering the contributions of the main term of the relativistic Coulombian Green function given by Hostler [J. Math. Phys, 5, 591 (1964)] to the second order of the S-matrix ele…
physics.atom-ph2006
The total cross-sections for the photoeffect for K-shell bound electrons and pair production with the created electron in the ground state for photon energies above 1 MeV
A. Costescu, S. Spanulescu, C. Stoica
Considering the contributions of the main term of the relativistic Coulombian Green function given by Hostler to the second order of S matrix element and taking into account only t…