An Experimental and Theoretical Study of the Propagation of High Amplitude Pulses in a Bounded Magneto-Plasma.
Abstract
Experiments on the propagation of narrow, high amplitude pulses along a plasma column have been conducted. The evolution of the pulse in space-time has been observed as a function of initial pulse strength. This technique gives insight into the competitive effects due to dispersion and nonlinearities. For a plasma, the positive column of a hot cathode, D.C. discharge in Argon is used. The pressure varied from 1 to 10m Torr Hg, and the averaged electron densities are of the order of 10 to the 9th power to 10 to the 10th power per. The pulses for excitation are generated by a home made device capable of producing subnanosecond pulses with 3200 volts peak amplitude, into a 50 OHM line, at a repetitive rate of approximately 100 p.p.s. At each operating point, i.e., for a given pressure and discharge current, recordings were obtained for different values of excitation pulse amplitude and background static magnetic field. For zero static magnetic field, two types of recordings were taken. For the first type, the position of the receiver was fixed and oscillograms in time were recorded. In the second type, the sampling time is kept fixed and the receiving probe is moved along the column.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1976
- Accession Number
- ADA037663
Entities
People
- Bernard R-s. Cheo
- Erich E. Kunhardt