PULSE DISPERSION IN A GYROTROPIC PLASMA.
Abstract
The dispersion of nanosecond electromagnetic pulses in a longitudinally magnetized plasma confined in a coaxial transmission line is observed experimentally. The transient response exhibits weakly damped oscillations characteristic of the natural frequencies of a bounded gyrotropic plasma. Measurements of the pulse dispersion caused by reflection from the plasma interface and transmission through the plasma are compared with theoretical results obtained on the basis of a dielectric model of the plasma, in which ion motion and random motions of electrons are neglected. The dispersion of pulsed electromagnetic waves in isotropic plasmas is observed for different ratios between the carrier frequency and the plasma frequency. Measurements of signal distortion are compared with theoretical results obtained by a convolution of the impulse response. The effect of superimposed magnetic fields on the dispersion of rf pulses in a plasma is discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0458638
Entities
People
- H. J. Schmitt
Organizations
- Sperry Corporation