# On the quasi-collisionality of plasmas with small-scale electric turbulence

@article{Keenan2016OnTQ, title={On the quasi-collisionality of plasmas with small-scale electric turbulence}, author={Brett D. Keenan and Mikhail V. Medvedev}, journal={Journal of Plasma Physics}, year={2016}, volume={82} }

Chaotic electromagnetic fields are common in many relativistic plasma environments, where they can be excited by instabilities on kinetic spatial scales. When strong electric fluctuations exist on sub-electron scales, they may lead to small angle, stochastic deflections of the electrons’ pitch angles. Under certain conditions, this closely resembles the effect of Coulomb collisions in collisional plasmas. The electric pitch-angle diffusion coefficient acts as an effective collision – or ‘quasi…

## References

SHOWING 1-10 OF 27 REFERENCES

### Quasicollisional magneto-optic effects in collisionless plasmas with sub-Larmor-scale electromagnetic fluctuations.

- PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2015

It is argued that the modified magneto-optic effects in these plasmas provide an attractive, radiative diagnostic tool for the exploration and characterization of small-scale magnetic turbulence, as well as affect inertial confinement fusion and other laser-plasma experiments.

### On the Transport and Radiative Properties of Plasmas with Small-Scale Electromagnetic Fluctuations

- Physics
- 2016

Plasmas with sub-Larmor-scale (“small-scale”) electromagnetic fluctuations are a feature of a wide variety of high-energy-density environments, and are essential to the description of many…

### Particle transport and radiation production in sub-Larmor-scale electromagnetic turbulence.

- PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2013

In the asymptotic regime of very small particle deflections, the pitch-angle diffusion coefficient is directly related to the spectrum of the emitted radiation, which provides much information about the statistical properties of the underlying magnetic turbulence.

### Radiative diagnostics for sub-Larmor scale magnetic turbulence

- Physics
- 2011

Radiative diagnostics of high-energy density plasmas is addressed in this paper. We propose that the radiation produced by energetic particles in small-scale magnetic field turbulence, which can…

### RADIATION SIGNATURES OF SUB-LARMOR SCALE MAGNETIC FIELDS

- Physics
- 2010

Spontaneous rapid growth of strong magnetic fields is rather ubiquitous in high-energy density environments ranging from astrophysical sources (e.g., gamma-ray bursts and relativistic shocks), to…

### Radiation from particles moving in small-scale magnetic fields created in solid-density laser-plasma laboratory experiments

- Physics
- 2015

Plasmas created by high-intensity lasers are often subject to the formation of kinetic-streaming instabilities, such as the Weibel instability, which lead to the spontaneous generation of…

### Transport of and radiation production by transrelativistic and nonrelativistic particles moving through sub-Larmor-scale electromagnetic turbulence.

- PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2015

This work has investigated the transport of nonrelativistic and trans-relatvistic particles in plasmas with high-amplitude isotropic sub-Larmor-scale magnetic turbulence, and its relation to the spectra of radiation simultaneously produced by these particles.

### Electron acceleration due to high frequency instabilities at supernova remnant shocks

- Physics
- 2000

Observations of synchrotron radiation across a wide range of wavelengths provide clear evidence that electrons are accelerated to relativistic energies in supernova remnants (SNRs). However, a viable…

### COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS

- Physics
- 2010

Particle-in-cell (PIC) simulations of relativistic shocks are in principle capable of predicting the spectra of photons that are radiated incoherently by the accelerated particles. The most direct…

### A NOVEL EMISSION SPECTRUM FROM A RELATIVISTIC ELECTRON MOVING IN A RANDOM MAGNETIC FIELD

- Physics
- 2011

We numerically calculate the radiation spectrum from relativistic electrons moving in small-scale turbulent magnetic fields expected in high-energy astrophysical sources. Such a radiation spectrum is…