| Autor: |
Zhou, Yi, Bellan, Paul M. |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Physics of Plasmas 30, 052101 (2023) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/5.0146806 |
| Popis: |
The two-stream instability (Buneman instability) is traditionally derived as a collisionless instability with the presumption that collisions inhibit this instability. We show here via a combination of a collisional two-fluid model and associated experimental observations made in the Caltech plasma jet experiment, that in fact, a low frequency mode of the two-stream instability is indifferent to collisions. Despite the collision frequency greatly exceeding the growth rate of the instability, the instability can still cause an exponential growth of electron velocity and a rapid depletion of particle density. High collisionality nevertheless has an important effect as it enables the development of a double layer when the cross-section of the plasma jet is constricted by a kink-instigated Rayleigh-Taylor instability. |
| Databáze: |
arXiv |
| Externí odkaz: |
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