Results 21 to 30 of about 1,228,279 (43)

Spectral Properties of Electromagnetic Turbulence in Plasmas [PDF]

, 2009
We report on the nonlinear turbulent processes associated with electromagnetic waves in plasmas. We focus on low-frequency (in comparison with the electron gyrofrequency) nonlinearly interacting electron whistlers and nonlinearly interacting Hall-magnetohydrodynamic (H-MHD) fluctuations in a magnetized plasma.
arxiv   +1 more source

Prospects of nuclear propulsion for space physics [PDF]

Presented at the 2008 SIF Conference Genua Italy (former FERMILAB FN 824), 2010
A new kind of Nuclear rocket engine with very High specific impulse is ...
arxiv  

Ionizing wave via high-power HF acceleration [PDF]

, 2010
Recent ionospheric modification experiments with the 3.6 MW transmitter at the High Frequency Active Auroral Research Program (HAARP) facility in Alaska led to discovery of artificial ionization descending from the nominal interaction altitude in the background F-region ionosphere by ~60 km. This paper presents a physical model of an ionizing wavefront
arxiv   +1 more source

ENA imaging near Planetary Bodies: Interaction between Plasma, Exosphere and Surface [PDF]

arXiv, 2013
Energetic Neutral Atom (ENA) imaging has been noticed as a powerful tool for remote sensing the plasma-neutral interaction in space. Particularly, the technique is used for investigation of space plasma near planetary bodies. Hear we provide a short review of recent low-energy ENA observations (up to ~1 keV) near Mars, Venus and the Moon.
arxiv  

Geant4 Assisted Monte Carlo Prediction of Space Proton-Induced Soft Error Rate Based on Heavy Ion Testing Data [PDF]

arXiv, 2017
A procedure of space proton-induced Soft Error Rate calculation based on heavy ion testing data is proposed. The approach relies on Geant4-assisted Monte Carlo simulation of the secondary particle LET spectra produced by proton interactions.
arxiv  

Resistive scales for collisionless reconnection in space plasma [PDF]

arXiv, 2009
We derive restrictions on collisional reconnection under the conditions in near-Earth space. The arguments are based on the precise definition and estimates of the resistive scale $L_\eta$ at the ion inertial site in collisionless reconnection, i.e. in the so-called `ion diffusion region' which is the region of Hall-current flow.
arxiv  

High-altitude signatures of ionospheric density depletions caused by field-aligned currents [PDF]

arXiv, 2007
We present Cluster measurements of large electric fields correlated with intense downward field-aligned currents, and show that the data can be reproduced by a simple model of ionospheric plasma depletion caused by the currents. This type of magnetosphere-ionosphere interaction may be important when considering the mapping between these two regions of ...
arxiv  

Existence of a class of rotopulsators [PDF]

arXiv, 2012
We prove the existence of a class of rotopulsators for the n-body problem in spaces of constant curvature of dimension k>=2.
arxiv  

Updating the Near-Earth Neutral Line Model [PDF]

arXiv, 2001
In the past thirty years the Near-Earth Neutral Line model for substorms has been proven to be correct in its basic assumption, i.e., that a new neutral line is created near the Earth during substorm onset. Yet there have also been numerous changes and additions to this model, which were necessary to give a more complete and deeper understanding of the
arxiv  

Reality of Manned Flying Reactor [PDF]

arXiv, 2012
New concept for reducing dose radiation exposure, which helps to decrease the duration and cost of deep space human missions is introduced. This concept can be efficiently realized, using modern materials, such as carbon nanotube composites.
arxiv