Electron cyclotron waves in a highly inhomogeneous plasma
Conference
·
OSTI ID:42966
- Univ. of Wisconsin, Madison, WI (United States). Electrical and Computer Engineering Dept.
The authors present measurements and analysis of the propagation, absorption, and scattering of electromagnetic waves in an inhomogeneous plasma. The plasma is produced by ECRH with densities of 1--6 {times} 10{sup 11} cm{sup {minus}3} and electron temperatures of 3--6 eV. The DC magnetic fields form a magnetic beach with field strengths of 0.5--1.5 kG. Dominant RHCP waves are launched by a helix immersed in the core of the plasma and then propagate towards the magnetic beach. The 3-D inductive magnetic fields are measured by small coaxial loops using a homodyne detection scheme. The effects of the strong radial density gradients and the axial magnetic field gradients on wave propagation are examined. Scattering of the waves from the plasma, modulated dipole scatters, and excited ion acoustic waves are analyzed. Comparisons of experimental results with analytic solutions and with results from numerical simulations using the ANTENA and MAGIC codes are made.
- OSTI ID:
- 42966
- Report Number(s):
- CONF-940604--; ISBN 0-7803-2006-9
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observation of localized electron cyclotron resonance heating in a magnetic mirror
Theory of second harmonic ion cyclotron radio-frequency wave coupling and heating in inhomogeneous plasmas
Inhomogeneity effects on wave properties in Elmo Bumpy Torus-Scale
Journal Article
·
Fri Jan 31 23:00:00 EST 1986
· IEEE Trans. Plasma Sci.; (United States)
·
OSTI ID:6138804
Theory of second harmonic ion cyclotron radio-frequency wave coupling and heating in inhomogeneous plasmas
Thesis/Dissertation
·
Mon Dec 31 23:00:00 EST 1984
·
OSTI ID:5316902
Inhomogeneity effects on wave properties in Elmo Bumpy Torus-Scale
Journal Article
·
Wed Sep 01 00:00:00 EDT 1982
· Phys. Rev. A; (United States)
·
OSTI ID:6519218