搜索结果: 151-165 共查到“知识库 等离子体物理学”相关记录502条 . 查询时间(1.695 秒)
Robustness of the filamentation instability as shock mediator in arbitrarily oriented magnetic field
Robustness of the filamentation arbitrarily oriented magnetic field
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2011/9/14
The filamentation instability (sometimes also referred to as “Weibel”) is a key process in many astrophysical scenario. In the Fireball model for Gamma Ray Bursts, this instability is believed to medi...
The EIT waves [named after the Extreme-ultraviolet Imaging Telescope (EIT) onboard the Solar and Heliospheric Observatory (SOHO)] are in the literature
usually described as fast magneto-acoustic (FMA...
We analyze the acoustic collective excitations in two- and three-dimensional binary Yukawa systems,consisting of two components with different masses. Theoretical analysis reveals a profound differenc...
Anisotropic Inverse Cascade toward Zonal Flow in Magnetically Confined Plasmas
Magnetically Confined Plasmas Anisotropic Inverse Cascade toward Zonal Flow
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2011/9/1
We propose a new mechanism for the generation of zonal flows in magnetically confined plasmas,complementing previous theories based on a modulational instability. We derive a new conservation law that...
Quasimonoenergetic and low emittance ion bunch generation from ultrathin targets by counterpropagating laser pulses of ultrarelativistic intensities
Quasimonoenergetic counterpropagating low emittance ion bunch
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2011/9/1
A new method for generation of quasimonoenergetic and low emittance fast ion/nuclei bunches of solid densities from nanotargets by two counterpropagating laser pulses of ultrarelativistic intensities ...
Predicting Zonal Flows -- A Comprehensive Reynolds-Stress Response-Functional from First-Principles-Plasma-Turbulence Computations
Reynolds-Stress First-Principles-Plasma-Turbulence
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2011/8/31
Turbulence driven zonal flows play an important role in fusion devices since they improve plasma confinement by limiting the level of anomalous transport. Current theories mostly focus on flow excitat...
Full orbit simulations of collisional impurity transport in spherical tokamak plasmas with strongly-sheared electric fields
sheared electric fields strongly-sheared electric fields tokamak plasmas
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2011/8/31
The collisional dynamics of test impurity ions in spherical tokamak plasmas with strongly-sheared radial electric fields is investigated by means of a test
particle full orbit simulation code. The st...
Criteria to define a pair-ion plasma and the role of electrons in nonlinear dynamics
Criteria, pair-ion plasma, ion acoustic wave
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2011/8/31
A criterion to define a pure pair-ion (PI) plasma is presented. It is suggested that the lighter elements (like H and He) are more suitable to produce PI plasmas. The observation of ion acoustic wave ...
Faraday Conversion and Rotation In Uniformly Magnetized Relativistic Plasmas
plasmas – polarization – radiation mechanisms: general – radiative transfer – Galaxy: centre
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2011/9/13
We provide precise fitting formulae for Faraday conversion and rotation coefficients in uniformly magnetized relativistic plasma. The formulae are immediately applicable to Rotation Measure and Circul...
Charged Particle Motion in a Plasma: Electron-Ion Energy Partition
Charged Particle Motion Electron-Ion Energy Partition
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2011/8/31
A fast charged particle traversing a plasma loses its energy to both the electrons and the ions in the plasma. We compute the energy partition, the fractions Ee/E0 and EI/E0 of the initial energy E0 o...
Spiky development at the interface in Rayleigh-Taylor instability: Layzer approximation with second harmonic
Layzer second harmonic
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2011/8/30
Layzer’s approximation method for investigation of two fluid interface structures associated with Rayleigh Taylor instability for arbitrary Atwood number is extended with the inclusion of second harmo...
A model of driven and decaying magnetic turbulence in a cylinder
model Driven field-aligned currents
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2011/8/30
Using mean-field theory, we compute the evolution of the magnetic field in a cylinder with outer perfectly conducting boundaries, an imposed axial magnetic and electric field. The thus injected magnet...
Spectrum standardization for laser-induced breakdown spectroscopy measurements
LIBS Normalization quantitative measurement plasma property
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2011/8/29
This paper presents a spectra normalization method for laser-induced breakdown spectroscopy (LIBS) measurements by converting the recorded characteristic line intensity at varying conditions to the in...
It was found recently that tunneling probabilities over a barrier is roughly twice as large as that given by standard WKB formula. Here we explained how this come from and showed that WKB method does ...
Stopping of ions in a plasma irradiated by an intense laser field
Stopping power Inelastic interaction Radiation field
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2011/8/26
The inelastic interaction between heavy ions and an electron plasma in the presence of an intense radiation field (RF) is investigated. The stopping power of the test ion averaged with a period of the...