Suprathermal electron tails in a beam-plasma instability
dc.contributor.author | Hollerbach, Uwe | |
dc.date.accessioned | 2017-04-04T22:13:03Z | |
dc.date.available | 2017-04-04T22:13:03Z | |
dc.date.issued | 1987-09 | |
dc.identifier.uri | http://hdl.handle.net/11122/7365 | |
dc.description | Thesis (M.S.) University of Alaska Fairbanks, 1987 | en_US |
dc.description.abstract | This study investigated the suprathermal electron tails produced in a beam-plasma instability, and their scaling with beam and background densities. A periodic one-dimensional electrostatic simulation was used to study the suprathermal tails. Electrons were treated as particles, and ions were treated as a fluid. The simulation showed that ion dynamics are required for the formation of the suprathermal tails, as expected from the theory of the oscillating two-stream instability. The energy of the suprathermal tails is directly proportional to the beam density, and does not depend strongly on the background density. There is a slight decrease in the energy of the suprathermal tails as the background density increases. A novel numerical effect was also found: a three-plasmon interaction caused by the modification of the Langmuir wave dispersion relation when high-order splines are used as particle shape factors. | en_US |
dc.language.iso | en_US | en_US |
dc.title | Suprathermal electron tails in a beam-plasma instability | en_US |
dc.type | Thesis | en_US |
dc.type.degree | ms | en_US |
dc.identifier.department | Physics | en_US |
dc.contributor.chair | Swift, W. | |
dc.contributor.committee | Stenbaek-Nielsen, H. C. | |
dc.contributor.committee | Rees, M. H. | |
dc.contributor.committee | Kan, J. R. | |
refterms.dateFOA | 2020-01-25T02:09:14Z |