| タイトル | Laboratory simulation of injection particle beams in the ionosphere |
| 著者（英） | Bernstein, W.; Leinbach, H.; Jost, R. J.; Szuszczewicz, E. P.; Holzworth, R. H.; Kellogg, P. J.; Anderson, H. R.; Hallinan, T. J. |
| 著者所属（英） | NASA Johnson Space Center|Naval Research Lab.|Minnesota Univ.|National Oceanic and Atmospheric Administration|Rice Univ.|Alaska Univ.|Aerospace Corp. |
| 発行日 | 1982-01-01 |
| 言語 | eng |
| 内容記述 | A series of experiments were carried out in large vacuum chambers in an attempt to understand the physics of the beam injection experiments. In the experiments, the electron beam was injected into an initially neutral gas. A plasma then accumulated as a result of ionization of the gas by the electron beam. The long interaction length and the longitudinal magnetic field resulted in the accumulation plasma densities considerably greater than the beam density. The most significant experimental result is that electron beams in the low keV energy range can ignite the beam plasma discharge (BPD) when their perveance is greater than 5 x 10 to the -7th AV exp -3/2, for pressures typical of the ionosphere. Ignition of the BPD may provide an explanation for many of the puzzling results observed in flight injection experiments. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 83A34193 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/404046 |
|
