On the quasi-collisionality of plasmas with small-scale electric turbulence / Keenan Brett D.,Medvedev Mikhail V. // JOURNAL OF PLASMA PHYSICS. - 2016. - V. 82, l. 2.

ISSN/EISSN:

0022-3778 / 1469-7807

Type:

Article

Abstract:

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-collision' frequency. We show that quasi-collisions may radically alter the expected radiative transport properties of candidate plasmas. In particular, we consider the quasi-collisional generalization of the classical Faraday effect.

Author keywords:

JITTER RADIATION; MAGNETIC-FIELDS; PROMPT EMISSION; SHOCKS; SPECTRA

DOI:

10.1017/S0022377816000350

Web of Science ID:

ISI:000376015000019

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	CAMBRIDGE UNIV PRESS
Address	32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
Language	English
EISSN	1469-7807
Keywords-Plus	JITTER RADIATION; MAGNETIC-FIELDS; PROMPT EMISSION; SHOCKS; SPECTRA
Research-Areas	Physics
Web-of-Science-Categories	Physics, Fluids \& Plasmas
Author-Email	bdkeenan@ku.edu
ORCID-Numbers	Keenan, Brett/0000-0001-5722-5532
Number-of-Cited-References	24
Usage-Count-Since-2013	1
Journal-ISO	J. Plasma Phys.
Doc-Delivery-Number	DM0EG