Dynamics of Langmuir collapse

Journal Article · Sat May 01 00:00:00 EDT 1976 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:7239992

Degtyarev, L M; Zakharov, V E; Rudakov, L I

The dynamics of the nonlinear stage of the modulation instability of long plasma waves (Langmuir waves) is analyzed. The dynamics of various initial spatial distributions of the plasma waves is studied by numerical simulation. It is shown that this instability results in a Langmuir collapse: the appearance of local singularities in the amplitude of plasma waves in regions of relatively low plasma density (cavitons). The electric field in a caviton is shown to have a nonspherical dipole structure. Asymptotic self-similar solutions for large values of the time are found. The influence of Landau damping on the dynamics of the collapse is taken into account. (AIP)

• Research Organization: Institute of Applied Mathematics, Academy of Sciences of the USSR
• OSTI ID: 7239992
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Vol. 2:3
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA WAVES
LANDAU DAMPING
LANGMUIR FREQUENCY
AMPLITUDES
ELECTRIC FIELDS
PLASMA DENSITY
SPATIAL DISTRIBUTION
DAMPING
DISTRIBUTION
700108* - Fusion Energy- Plasma Research- Wave Phenomena