scholarly journals LASNEX: pondermotive force algorithm

1977 ◽  
Author(s):  
J.A. Harte ◽  
G.B. Zimmerman
Keyword(s):  
Pondermotive Force

Gauge Invariance and the Lorentz Pondermotive Force

1960 ◽  
Vol 119 (3) ◽  
pp. 1102-1105 ◽  
Author(s):  
Lloyd Motz
Keyword(s):  
Gauge Invariance ◽  
Pondermotive Force

Wakefield acceleration towards ZeV from a black hole emanating astrophysical jets

2019 ◽  
Vol 34 (34) ◽  
pp. 1943018
Author(s):  
T. Ebisuzaki ◽  
T. Tajima
Keyword(s):  
Particle Interaction ◽  
Cosmic Ray ◽  
High Energy ◽  
Rotational Instability ◽  
Astrophysical Jets ◽  
Electromagnetic Pulses ◽  
High Energy Cosmic Rays ◽  
Acceleration Mechanism ◽  
Wakefield Acceleration ◽  
Pondermotive Force

We consider that electromagnetic pulses produced in the jets of this innermost part of the accretion disk accelerate charged particles (protons, ions, electrons) to very high energies via wakefield acceleration, including energies above 10[Formula: see text] eV for the case of protons and nucleus and 10[Formula: see text] eV for electrons by electromagnetic wave-particle interaction. Thereby, the wakefield acceleration mechanism supplements the pervasive Fermi’s stochastic acceleration mechanism (and overcomes its difficulties in the highest energy cosmic ray generation). The episodic eruptive accretion in the disk by the magneto-rotational instability gives rise to the strong Alfvenic pulses, which acts as the driver of the collective accelerating pondermotive force. This pondermotive force drives the wakes. The accelerated hadrons (protons and nuclei) are released to the intergalactic space to be ultra-high energy cosmic rays. The high-energy electrons, on the other hand, emit photons to produce various non-thermal emissions (radio, IR, visible, UV, and gamma-rays) of active galactic nuclei in an episodic manner, giving observational telltale signatures.

Oscillating two-stream instabifity of upper-hybrid laser radiation in a plasma

1980 ◽  
Vol 23 (3) ◽  
pp. 515-520 ◽  
Author(s):  
R. R. Sharma
Keyword(s):  
Laser Radiation ◽  
Frequency Response ◽  
Turning Point ◽  
Low Frequency ◽  
Larmor Radius ◽  
Power Laser ◽  
High Frequency Response ◽  
Pondermotive Force ◽  
High Power Laser Radiation ◽  
Stream Instability

In the vicinity of a turning point, a high-power laser radiation (in the upper- hybrid mode) is unstable for short wavelength, purely growing perturbations, viz, oscillating two-stream instability. The nonlinearity in the low-frequency response arises through the parallel pondermotive force whereas in the high- frequency response it arises through the equation of continuity. In the limits of long and short perpendicular wavelengths, κ┴ρe< 1 and κ┴ρe > 1, the growth rates are found to be γ∞ │κ┴.V0┴│2, where ρe and V0┴ are the electron Larmor radius and oscillatory drift velocity.

Nonlinear interaction of the radiation with the pondermotive force deformated plasmas

1981 ◽  
Vol 2 (1) ◽  
pp. 146-157 ◽  
Author(s):  
N.E. Andreev ◽  
V.P. Silin ◽  
G.L. Stenchikov
Keyword(s):  
Nonlinear Interaction ◽  
Pondermotive Force
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