We calculate the intersubband and intrasubband many-body inelastic Coulomb scattering rates due to electron-electron interaction in two-subband semiconductor quantum wire structures. We analyze our relaxation rates in terms of contributions from interand intrasubband charge-density excitations separately. We show that the intersubband (intrasubband) charge-density excitations are primarily resp...

Thermodynamic perturbation theory is used to calculate the corrections to the free energy and equation of state of the one-component plasma, due to the polarization of the electron background. In a series of recent papers [1, 2, 3] the thermodynamic properties and correlation functions of the classical one-component plasma (OCP) in a uniform background have been computed accurately with the hel...

The one– and two– particle densities of up to four interacting electrons with spin, confined within a quasi one–dimensional “quantum dot” are calculated by numerical diagonalization. The transition from a dense homogeneous charge distribution to a dilute localized Wigner–type electron arrangement is investigated. The influence of the long range part of the Coulomb interaction is studied. When t...

Electron bunches with charge densities ρ of the order of 102 to 103 [nC/cm3], energies between 20. and 100. [MeV], peak current > 100 [A], bunch lengths between 0.3 and 1.8 [cm], and bunch charge of 2.0 to 20. [nC] are relevant to the design of Free Electron Lasers and future linear colliders. In this paper we present the results of numerical simulations performed with a particle in a cell (pic...

Stability of the π-π stacking interactions in the Ben||N-substituted-coronene complexes was studied using the computational quantum chemistry methods (where Ben is benzene and || denotes π-π stacking interaction, and N-substituted-coronene is coronene molecule which substituted with different number of N atoms). The results reveal simultaneous effects of structure and number of Heteroatom on th...

A method is presented for determining innerand outer-electron radial density functions for two-electron systems by partitioning the fully correlated, two-electron, radial density function. This is applied to the helium isoelectronic series (Z = 1 to 10 and 100) and the critical nuclear charge system, which has the minimum charge for which the atomic system has at least one bound state, to separ...

In this report, the distribution and deviation of electric field in the active medium of the TE CO2 laser has been investigated due to the injection of net electron charge beam as a plasma generator. Some parameters of system have been considered, such as density and mean-free-path of injected charge beam. The electric potential and electric field distribution have been simulated by solving the...

Space charge lenses use a confined electron cloud for the focusing of ion beams. Due to the electric space charge field, the focusing is independent of the particle mass. For this reason the application of space charge lenses especially in the field of heavy ion beams is advantageous. Moreover, the trapped non neutral plasma cloud compensates the space charge forces of the ion beam. The focusin...