Volt-ampere characteristics of cylindrical and spherical Langmuir probes for various potential models Scientific report

Volt-ampere characteristics of cylindrical and spherical Langmuir probes for various potential model

A modified Monte Carlo model for the ionospheric heating rates

A Monte Carlo method is adopted as a basis for the derivation of the photoelectron heat input into the ionospheric plasma. This approach is modified in an attempt to minimize the computation time. The heat input distributions are computed for arbitrarily small source elements that are spaced at distances apart corresponding to the photoelectron dissipation range. By means of a nonlinear interpolation procedure their individual heating rate distributions are utilized to produce synthetic ones that fill the gaps between the Monte Carlo generated distributions. By varying these gaps and the corresponding number of Monte Carlo runs the accuracy of the results is tested to verify the validity of this procedure. It is concluded that this model can reduce the computation time by more than a factor of three, thus improving the feasibility of including Monte Carlo calculations in self-consistent ionosphere models

A theoretical model of the ionosphere dynamics with interhemispheric coupling

Dynamic model for ionospheric plasma with interhemispheric couplin

Statistical study of precipitating electrons

Energy spectra of precipitating electrons are fitted to the sum of three distributions: a power law, a Maxwellian and a Gaussian. This fitting procedure determines seven parameters which characterize the essential features of each spectrum. These characteristic parameters are used to carry out various studies involving precipitating electrons. It is shown that the absence of the power-law population from a particular spectrum is related to the softness of the precipitating primary flux, that the Maxwellian temperature and the Gaussian peak energy have a positive correlation the strength of which varies with local time, that the upward moving Gaussian population has a loss cone distribution, and that the one dimensional velocity distribution parallel to the magnetic field occasionally displays a plateau or a hump on the tail

An Investigation of the absorption of electromagnetic radiation by a plasma of sub-critical density

http://deepblue.lib.umich.edu/bitstream/2027.42/6901/5/bad0524.0001.001.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/6901/4/bad0524.0001.001.tx