Collisional-radiative electron-ion recombination rate in rare-gas plasmas.
Collisional radiative electron-ion recombination rates measured in decaying rare gas plasmas produced by transient discharge
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Collisional radiative electron-ion recombination rates measured in decaying rare gas plasmas produced by transient discharge
Collisional emission and absorption of longitudinal waves due to particle encounters in numerical experiments on one dimensional one species plasma
Atomic nitrogen collisional ionization and recombination rates under assumed quasi-steady nonequilibrium distribution of electron state populations
Collisional effects on second order spatial ion wave echo, evaluating velocity integral
Characteristics of collisional kinetic equations and solutions using constants of motion method including Chandrasekhar, Hamiltonian, Vlasov, and Langevin formulations
Collisional excitation rates for lithium-like ions derived from diagnosed plasma produced in theta pinch device and line intensities emitted by these ions
Collisional ionization rates for lithium and beryllium-like ions deduced from time history of spectral lines emitted by these ions in hot plasmas
Spectroscopy and collisional transfer in methyl chloride by microwave laser double resonance, measuring population changes in various rotation vibration levels
Unstable collisional drift waves in high density ionized Li arc plasma, possibly causing anomalous losses and fluctuations
Collisional broadening of IR absorption lines in vibration-rotation bands of carbon monoxide and hydrochloric acid
Long wavelength ion acoustic instability of two temperature collisional fully ionized plasma with heat transfer, noting additional destabilizing currents
Determination of collisional-excitation-rate coefficients for sodium-like Ar VIII ions theoretically using the Coulomb-Born approximation as well as experimentally from the absolute intensities of lines emitted by these ions in well-diagnosed plasmas whose parameters were obtained from the analysis of scattered laser light. These plasmas were produced in a theta-pinch device. The agreement between theory and experiment is within the estimated accuracy of plus or minus 50% for excitation from the ground state to the n = 3 and n = 4 levels, whereas some deviations are observed for two transitions to the n = 5 levels at lower temperatures. A rate coefficient for ionization was obtained from the time dependence of the ionization.
Investigation of different models for the collisional excitation of carbon monoxide (CO) by solving the rate equations for the ten lowest energy levels, including stimulated emission and absorption by 3 K isotropic radiation, spontaneous emission, and collisions. The results are qualitatively applicable to other linear molecules. They show that a wide range of rotational excitation temperatures, including population inversions, can be produced by the various kinetic temperatures and particle densities which are likely to occur in the interstellar regions containing molecules.
The Lagrange characteristics method and the constants of motion method are applied to various collisional kinetic equations. The relationship between the characteristics and the particle equations of motion is discussed. A special solution of Chandrasekhar equation is given.
Based upon a boundary-value formulation, a new approximate expression is derived for the total axial current on an infinite antenna immersed in an unbounded, cold, collisional magnetoplasma with a dc magnetic field oriented parallel to the antenna. Numerical results are presented for the current distributions over plasma parameters corresponding to each of the eight regions of the Clemmow-Mullaly-Allis diagram and for different values of the collision frequency.
Using semiclassical Coulomb excitation theory, proton collisional excitation and deexcitation cross sections are calculated for all transitions between the Fe(+12) ground configuration levels. Rate constants pertaining to these processes are then derived for coronal temperatures. These rates are shown to be comparable in all cases to the corresponding electron rate constants.
A collisional electromagnetic dispersion relation is derived from two-fluid theory for the interchange mode coupled to the Alfven, acoustic, drift and entropy modes in a partially ionized plasma. The fundamental electromagnetic nature of the interchange model is noted; coupling to the intermediate Alfven mode is strongly stabilizing for finite k sub z. Both ion viscous and ion-neutral stabilization are included, and it was found that collisions destroy the ion finite Larmor radius cutoff at short perpendicular wavelengths.
A collisional electromagnetic dispersion relation is derived from two-fluid theory for the interchange mode coupled to the Alfven, acoustic, drift, and entropy modes in a partially ionized plasma. The fundamental electromagnetic nature of the interchange mode is noted: coupling to the intermediate Alfven mode is strongly stabilizing for finite perturbations of the magnetic field. Both ion-viscous and ion-neutral stabilization are included; and it is found that collisions destroy the FLR (finite Larmor radius) cutoff at short perpendicular wavelengths.