Showing papers on "Relativistic plasma published in 1974"

Computer simulation of pulse trapping and pulse stacking of relativistic electron layers in astron

Abstract: During the past two years computer simulation has been used extensively to obtain a detailed description of pulse trapping and pulse stacking of relativistic E layers in astron. Resistors are essential to good trapping, in agreement with experiment. In the code, pulse trapping can easily be arranged to be 100% efficient—in marked contrast to the experiment. Details of pulse stacking are dependent on resistor configuration, degree of charge neutralization, and external well shape, but the field reversal increase invariably runs into a saturation due to axial expansion of the layer. This process can be described as a phase space exclusion or, alternatively, as nonadiabatic axial heating. The pulse‐stacking process involves a tearing and bunching, and it is also nonadiabatic in the radial motion; as a consequence, radial expansion always occurs, and this can also act as a limitation to field reversal unless the resistor locations allow considerable radial room. Very tightly focused (axially) pulses can result from vacuum pulse trapping if system conditions are optimized correctly. This in turn lessens the axial expansion problem for vacuum layers. In contrast, the radial expansion problem is much more severe for vacuum layers, and this effect causes radial loss at some layer strength well short of field reversal. Large‐current (2500 A) nuetralized pulses result in field reversal with one pulse.

Determination of relativistic electron ring microstate from the synchrotron radiation spectrum

Abstract: It is shown that a knowledge of the synchrotron emission spectrum for a thin ring of relativistic electrons is sufficient information to reconstruct the microscopic distribution function that self-consistently generates the ring equilibrium.

Secular free solution up to third-order of relativistic hot dissipative plasma equation for electrostatic field

Abstract: The perturbation method of Lindstedt is applied to study the relativistic nonlinear effects for an elliptically polarized transverse monochromatic wave in a cold dissipative plasma in the absence of a static magnetic field. Amplitude-dependent wave-length and frequency shifts including relativistic correlations are derived.

Synchrotron radiation from a weakly relativistic electron plasma

Abstract: Qualitative agreement between the experimental results and a model based upon the linear theory of synchrotron emission, absorption, and transmission in weakly relativistic plasma is obtained.