Hamid K. Rassoul

TL;DR: In this article, the authors used the combined Release and Radiation Effects Satellite (CRRES) sweep frequency receiver data to develop an empirical model of the plasmasphere and trough number density.

TL;DR: In this paper, a new empirical model of the plasmapause location was developed using density data from the plasma wave receiver onboard the CRRES spacecraft for nearly 1000 orbits, and the model gives the linear best fit location of the PLP as well as the standard deviations of the model parameters.

TL;DR: In this paper, X-ray and electric field measurements were made during five nearby negative natural lightning strikes in north central Florida during the summer of 2004, demonstrating unambiguously that the source of lightning X rays is closely related to the stepping process.

TL;DR: Using a NaI(Tl) scintillation detector designed to operate in electrically noisy environments, intense bursts of energetic radiation are observed during the dart leader phase of rocket-triggered lightning, providing strong evidence that the production of runaway electrons is an important process during lightning.

TL;DR: In this article, a model calculation of solar energetic particle propagation in a three-dimensional interplanetary magnetic field is presented, which includes essentially all the particle transport mechanisms: streaming along magnetic field lines, convection with the solar wind, pitch-angle diffusion, focusing by the inhomogeneous interplanarial magnetic field, perpendicular diffusion, and pitch angle dependent adiabatic cooling by the expanding solar wind.