Abstract
The effects of finite geometry on the frequency spectrum and mode structure of ion-acoustic oscillations in an equilibrium (Te=Ti) plasma are investigated. Numerical and analytical results for one-dimensional models of collisionless plasmas with both absorbing and reflecting boundaries show that these modes are strongly damped. With absorbing boundaries the fluctuations are damped in an ion-transit time. For reflecting boundaries the frequency spectrum is identical to the heavily Landau-damped spectrum for an unbounded plasma. These theoretical calculations suggest that the weakly damped, low-frequency density fluctuations recently observed in incandescent cavities are not ion-acoustic waves.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
