Laminar electrostatic shock waves generated by an ion beam
- 1 December 1973
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 16 (12), 2167-2175
- https://doi.org/10.1063/1.1694282
Abstract
Strong laminar electrostatic shock waves have been experimentally observed when an ion beam is injected into a collisionless plasma. The structure of the shock is qualitatively different from one with a trailing wave train. A density depression follows behind the shock front, and no trailing wave train due to wave dispersion is found. A significant amount of ions reflected from and transmitted through the shock front form a precursor. The critical Mach number above which no shock is formed is found to be 1.5. Numerical simulations reported here reproduce the experimental observations very well. An analysis based on the water‐bag model accounts for the observed value of the critical ion‐beam velocity which gives the critical Mach number. It also points out that the reflected ions play an essential role in the persistence of the shock.Keywords
This publication has 21 references indexed in Scilit:
- Trapped-Ion Instabilities in Ion-Acoustic WavePhysics of Fluids, 1972
- Electron-Plasma-Wave Shocks in a Bounded PlasmaPhysical Review Letters, 1972
- Ion Heating via Turbulent Ion Acoustic WavesPhysical Review Letters, 1972
- Computer Simulation of Ion-Acoustic Shocks. II. Slug and Piston ProblemsPhysics of Fluids, 1972
- Electrostatic Ion-Acoustic Shocks Produced by Density StepsPhysical Review Letters, 1972
- Theory of Laminar Collisionless ShocksPhysical Review Letters, 1971
- Formation of Ion-Acoustic Collisionless ShocksPhysics of Fluids, 1971
- Experimental Evidence for the Mechanism of Charge Transfer into Continuum StatesPhysical Review Letters, 1970
- Ion-Burst Excited by a Grid in a PlasmaJournal of Applied Physics, 1970
- Stability Limits for Longitudinal Waves In Ion Beam-Plasma InteractionPhysics of Fluids, 1966