Dispersion relation and instability for an anisotropic nonuniform flowing plasma
Journal Article
·
· Plasma Physics and Controlled Fusion
- Utah State University, Logan, UT (United States); Utah State University
- Pohang University of Science and Technology, Gyeongbuk (Korea, Republic of)
- Utah State University, Logan, UT (United States)
A generalized formula for wave instability is developed for an anisotropic nonuniform plasma with finite flows and temperatures. Six-moment fluid equations are solved to give the analytic expression for wave instability in arbitrarily nonuniform plasmas. The analytic formula explicitly states the dependence of wave instability on the nonuniformities of number density, flow velocity, and anisotropic or isotropic pressure. The accuracy of the formalism is verified by a numerical calculation of implicit dispersion relations in complex Fourier space. The analysis shows that nonuniformity plays a critical role in plasma instability, while the flow velocity and anisotropic pressures determine the growth rate of the instability. Lastly, the instability diagram and associated instability criterion for anisotropy-driven instability are introduced as applications of the formalism.
- Research Organization:
- Utah State University, Logan, UT (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- FG02-04ER54746; SC0022048
- OSTI ID:
- 1991367
- Journal Information:
- Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 12 Vol. 64; ISSN 0741-3335
- Publisher:
- IOP ScienceCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Explicit dispersion relations for warm fluid waves in a uniform plasma (invited)
Effect of pressure anisotropy and flow velocity on Kelvin-Helmholtz instability of anisotropic magnetized plasma using generalized polytrope laws
Kelvin--Helmholtz instability and vortices in magnetized plasma
Journal Article
·
Sun Feb 26 19:00:00 EST 2023
· Journal of the Korean Physical Society
·
OSTI ID:1991363
Effect of pressure anisotropy and flow velocity on Kelvin-Helmholtz instability of anisotropic magnetized plasma using generalized polytrope laws
Journal Article
·
Sun Nov 14 23:00:00 EST 2010
· Physics of Plasmas
·
OSTI ID:21531945
Kelvin--Helmholtz instability and vortices in magnetized plasma
Journal Article
·
Sat Oct 31 23:00:00 EST 1987
· Phys. Fluids; (United States)
·
OSTI ID:6135546