Introduction: Impact vaporization process may have played an important role in the formation and evolution of the atmospheres and oceans of planets e.g.[1,2] and have had significant consequences to planets’ surface environment e.g.[3,4]. Although a mechanical aspect of this process has been investigated extensively, its chemical aspect has not been studied to a great depth. One of the reasons ...

The application of GRID (Gamma Ray Induced Doppler broadening) spectroscopy to the localization of foreign atoms in single crystals is demonstrated on erbium in YAP. By the investigation of the Doppler broadened secondary γ line for two crystalline directions, the Er was determined to be localized on the Y site. Conditions for the nuclear parameters of the impurity atoms used for the applicatio...

We discuss the effects of particle correlations on the spectral broadening due to the radiator motion (Doppler broadening) for a Ni-like XUV laser line pumped in two different regimes (transient and quasi-steady state regimes) of collisional excitation. In a medium with gain, radiative transport effects modify the observed profile and these modifications depend on the homogeneous or inhomogeneo...

Cadmium-incorporated Li2FeSiO4/C composites have been successfully synthesized by a solid-state reaction assisted with refluxing. The effect and mechanism of Cd-modification on the electrochemical performance of Li2FeSiO4/C were investigated in detail by X-ray powder diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, Raman spectra, transmission electron microscopy, pos...

Compton scattering models in Geant4 are the following: a.) G4ComptonScattering: listed as ”compt” in the process name. No Rayleigh scattering in the model. b.) G4LowEnergyCompton: Process name is ”LowEnCompton” in the tracking code. It has errors in the treatment of Rayleigh scattering and does not account for Doppler broadening (the effect of bound electron momentum on the scattered particle e...

Spectral lines in the optical spectra of atoms, molecules, and other quantum systems are characterized by a range frequencies ω or wavelengths λ=2πc/ω, where c is speed light. Such frequency wavelength called width spectral (linewidth). It influenced many specific factors. Thermal motion molecules results broadening as result Doppler effect (thermal broadening) their collisions (pressure broade...

a three-step selective photo-ionization for gd155 and gd157 isotopes by pulsed laser wasevaluated numerically. due to large thermal neutron absorption cross sections, these two isotopes innatural gadolinium are good candidates as burnable poison to control reactivity early in the fuel cycleand allow extended fuel burn up. rate equations have been used to calculate the dynamics of the isotopepop...

The vibrationally resolved X-ray photoelectron spectra of X2Σg+(3σg−1) and B2Σu+(2σu−1) states of N2+ were recorded for different photon energies and orientations of the polarization vector. Clear dependencies of the spectral line widths on the X-ray polarization as well as on the symmetry of the final electronic states are observed. Contrary to the translational Doppler, the rotational Doppler...

An influence of nonlinear interference processes at quantum transitions under strong resonance electromagnetic fields on absorption, amplification and refractive indices as well as on four-wave mixing processes is investigated. Doppler broadening of the coupled transitions, incoherent excitation, relaxation processes, as well as power saturation processes associated with the coupled levels are ...