نتایج جستجو برای: inhomogeneous plasma

تعداد نتایج: 371307  

Journal: :The Astrophysical Journal 2021

The Biermann battery is a promising generation mechanism of seed magnetic field in the universe. We propose new driving for an inhomogeneous plasma with beam component. An electron flow induced by return current can make pressure gradient which not parallel to density gradient. As result, generated battery. demonstrate conducting three-fluid simulations. By this mechanism, first cosmic rays gen...

2004
A. Mohsen

Some of the basic developments in the theory of electromagnetic field representation in terms of Hertz vectors are reviewed. A solution for the field in an inhomogeneous anisotropic medium is given in terms of the two Hertz vectors. Conditions for presentation of the field in terms of uncoupled transverse electric and transverse magnetic modes, in a general orthogonal coordinate system, are der...

Journal: :پژوهش فیزیک ایران 0
محمود مرادی سید حسن حاجی حسینی m. moradi,s h haji husseini

the third order term in the density functional is required for study of an inhomogeneous fluid. this term can be chosen such that, the thermodynamic potential gives the correct bulk pressure. the density porofile of a hard sphere fluid near hard wall which is an inhomogeneous fluid is obtained and it is shown that, if the third order term is ignored, although an exact bulk direct correlation fu...

2010
G. G. Sacco S. Orlando C. Argiroffi A. Maggio G. Peres F. Reale R. L. Curran Chester F. Carlson

Context. High resolution X-ray observations of classical T Tauri stars (CTTSs) show a soft X-ray excess due to high density plasma (ne = 1011 − 1013 cm−3). This emission has been attributed to shock-heated accreting material impacting onto the stellar surface. Aims. We investigate the observability of the shock-heated accreting material in the X-ray band as a function of the accretion stream pr...

2007
A. V. Nesterov

The analysis of the vector wave equation was conducted. The class of self-similar solutions with inhomogeneous polarization corresponding to the resonator modes is deduced. The modes with inhomogeneous polarization can be selected by a diffraction element with polarization selectivity used as one of the resonator mirrors. Diffraction elements with high polarization selectivity about 100% are ne...

2008
Andrea Macchi Alessandra Bigongiari Francesco Ceccherini Fulvio Cornolti Tatiana V Liseikina Marco Borghesi Satyabrata Kar Lorenzo Romagnani

The propagation of a superintense laser pulse in an underdense, inhomogeneous plasma has been studied numerically by two-dimensional particle-incell simulations on a time scale extending up to several picoseconds. The effects of the ion dynamics following the charge-displacement self-channeling of the laser pulse have been addressed. Radial ion acceleration leads to the “breaking” of the plasma...

Journal: :Journal of Research of the National Bureau of Standards, Section D: Radio Science 1965

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