Coherency properties of strong Langmuir turbulence

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5581714

Rose, H A; DuBois, D F; Russell, D ^[1]

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1. Los Alamos National Lab., NM (USA)

Strongly correlated Langmuir wave collapse has been observed in two dimensional simulations of Zakharov's model in a regime characterized by strong ion sound wave damping and an external drive frequency, {omega}{sub 0}, close to but less than the plasma frequency, ({omega}{sub p} {minus} {omega}{sub 0})/{omega}{sub 0} > {epsilon} with {epsilon} {approx equal} 0.005. Caviton-caviton interactions induce temporal correlations between different collapse sites on a time scale the order of a collapse cycle, and on a longer time scale site locations migrate possibly leading to strong spatial correlations. Certain features of ionospheric incoherent scatter radar (ISR) spectra are consistent with such correlations. 6 refs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5581714
• Report Number(s): LA-UR-89-895; CONF-891073--1; ON: DE89009290
• Country of Publication: United States
• Language: English

Related Subjects

640200* -- Atmospheric Physics
640410 -- Fluid Physics-- General Fluid Dynamics
657000 -- Theoretical & Mathematical Physics
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700100 -- Fusion Energy-- Plasma Research
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHEMICAL ANALYSIS
EARTH ATMOSPHERE
HEATING
IONOSPHERE
LANGMUIR FREQUENCY
MEASURING INSTRUMENTS
NONDESTRUCTIVE ANALYSIS
PLANETARY IONOSPHERES
PLASMA WAVES
RADAR
RADIATION SCATTERING ANALYSIS
RANGE FINDERS
TURBULENCE