Effective collision frequency in the presence of an ion sound wave parametrically excited in Tonks--Dattner resonance

Journal Article · Sat Nov 01 04:00:00 EST 1975 · J. Appl. Phys., v. 46, no. 11, pp. 4730-4739

DOI:https://doi.org/10.1063/1.321548· OSTI ID:4131675

Ikezawa, S; Okuda, T

Effective collision frequency enhanced by an ion sound wave parametrically excited in Tonks-Dattner (T-D) resonance is evaluated from the Q value and the damping rate of a surface wave propagating along the axial direction as a test wave, which are observed in a mercury vapor discharge. The ion sound wave is produced by a three-wave process of the parametric excitation where the incident electromagnetic wave decays into two electrostatic waves, an ion sound wave, and a T-D resonance. The effective collision frequencies thus obtained as a function of the absorbed pumping power are nearly in agreement with those based on the perturbed orbit theory proposed by Weinstock et al. The ion density fluctuation level estimated from Dawson's formula is found to be lower than that obtained in other turbulent experiments. (AIP)

• Research Organization: Department of Electronic Engineering, Chubu Institute of Technology, Kasugai, Japan
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-009094
• OSTI ID: 4131675
• Journal Information: J. Appl. Phys., v. 46, no. 11, pp. 4730-4739, Journal Name: J. Appl. Phys., v. 46, no. 11, pp. 4730-4739; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

*COLLISIONAL PLASMA-- ION ACOUSTIC WAVES
700108* --Fusion Energy--Plasma Research--Plasma Wave Phenomena
COLLISIONS
DAMPING
EIGENVALUES
ELECTRIC DISCHARGES
ENERGY LOSSES
EXCITATION
ION DENSITY
LASER- RADIATION HEATING
MERCURY
N70900* --Physics--Controlled Thermonuclear Research--Wave Phenomena
PLASMA HEATING
THRESHOLD ENERGY
TONKS-DATTNER RESONANCE
TURBULENCE
WAVE PROPAGATION