Results 271 to 280 of about 60,457 (299)

Electrostatic wave excitation in planetary magnetospheres: Application to Neptune

Journal of Geophysical Research: Space Physics, 1993
Voyager 2 observations of electrostatic electron and ion cyclotron harmonic waves in Neptune's magnetosphere are addressed. A model of electron Bernstein modes generated by a loss cone distribution of superthermal electrons is scaled to Neptune parameters and a comparison of theory with the observed electron flux shows good agreement. A model of proton
D. D. Barbosa, W. S. Kurth, D. A. Gurnett, E. C. Sittler   +3 more
openaire   +1 more source

Dynamics of nonlinearly damped microcantilevers under electrostatic excitation

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2012
Nonlinear dynamic behaviour of a cantilever microbeam actuated by a combination of DC and AC loading are investigated in presence of squeeze-film damping. A reduced order model formulated accounting for the nonlinearities of the system arising out of electrostatic forces and squeeze-film damping is numerically simulated to observe the large amplitude ...
S Chaterjee, G Pohit
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Ion-beam-excited electrostatic ion cyclotron waves

Physics Letters A, 1976
Abstract Self-excited electrostatic ion cyclotron waves were observed in an ion-beam-plasma system produced in a DP-operated Q-machine. The frequency of the waves showed the theoretically predicted variation with the magnetic field.
P. Michelsen, H.L. Pécseli, J.Juul Rasmussen, N. Sato   +3 more
openaire   +1 more source

Excitation of electrostatic plasma turbulence by a magneto-acoustic wave

Nuclear Fusion, 1974
An integral equation which generalizes the dispersion relation for electrostatic plasma modes with wave numbers in the presence of a large-scale magnetoacoustic (pump) oscillation is derived. This calculation is accurate to all orders in the parameter where is the amplitude of the particle displacement induced by the pump wave.
K.D. Harms, G. Hasselberg, A. Rogister
openaire   +1 more source

Low pressure encapsulated resonant structures excited electrostatically

Proceedings of International Solid State Sensors and Actuators Conference (Transducers '97), 2002
Low pressure encapsulated resonant structures were built with a cavity pressure of 1 mbar, obtained and measured for several structures bonded anodically to glass lids with different recess depths from 20.5 to 44 /spl mu/m. The same pressure has also been demonstrated for structures with integrated electrodes for electrostatic excitation and capacitive
T. Corman, P. Enoksson, G. Stemme
openaire   +1 more source

Nonlinear dynamics of multidimensional electrostatic excitations in nonthermal plasmas

Plasma Physics and Controlled Fusion, 2013
Electrostatic solitary waves in plasmas are the focus of many current studies of localized electrostatic disturbances in both laboratory and astrophysical plasmas. Motivated by recent experimental observations, in which electrostatic solitary structures were detected in laser-plasma experiments, we have undertaken an investigation of the nonlinear ...
Williams, G., Kourakis, I.
openaire   +2 more sources

Ion-beam excitation of electrostatic ion-cyclotron waves

The Physics of Fluids, 1976
Electrostatic ion-cyclotron waves are excited by a cesium ion beam injected into a cesium plasma in a Q machine. Strong interactions are observed. Spatial growth rates are measured as a function of beam and plasma parameters.
H. Böhmer, J. P. Hauck, N. Rynn
openaire   +1 more source

The Vibration of A Rotating Hemispherical Shell Excited by Electrostatic Field

International Journal of Applied Electromagnetics and Mechanics, 1996
The modal equations of motion of an electrostatically forced rotating hemispherical shell are derived based on Niordson thin shell theory. These equations are coupled by the Coriolis force and the applied electrical field. The parametric instabilities can be excited when the amplitude and frequency of the harmonic eletrical force are located in some ...
C.S. Chou, CO. Chang, J.J. Hwang
openaire   +1 more source

An Electrostatic Comb Excitation Resonant Pressure Sensor for High Pressure Applications

IEEE Sensors Journal, 2022
Yulan Lu, Zongze Yu, Jiaxin Qin
exaly  

Self-excited MEMS Oscillator using an Electrostatic Cantilever

IEEJ Transactions on Sensors and Micromachines, 2023
Makoto Mita, Hiroshi Toshiyoshi
openaire   +1 more source