1 citations · 1 across the 7 of their papers we have counts for
7 papers
Analysis of the radiative thermal transfer in planar multi-layer systems with various emissivity and transmissivity properties
Sever Spanulescu
The paper analyzes the radiative thermal transfer in a liquid helium cryostat with liquid nitrogen shielding. A infinite plane walls model is used for demonstrating a method for lo…
Optimal basis set for ab-initio calculations of energy levels in tunneling structures, using the covariance matrix of the wave functions
Sever Spanulescu
The paper proposes a method to obtain the optimal basis set for solving the self consistent field (SCF) equations for large atomic systems in order to calculate the energy barriers…
The calculus of the electric potential and field intensity in multiple electrodes lateral tunneling transistors with double gate
Sever Spanulescu
The paper presents an adaptive over-relaxation method for calculating the electric potential and field intensity, for a complex tunnel transistor structure involving a split gate a…
Analysis of the Conduction Heat Transfer in Cantilevers under Steady State Cryogenic Conditions
Sever Spanulescu
An accurate analysis of the conduction heat transfer in a cryogenic flask is made and some useful formulae are derived. Taking into account the temperature dependence of conductivi…
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.…
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…
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…