Observation of modulational instability in Nd-laser beat-wave experiments
Journal Article
·
· Physical Review Letters; (United States)
- Laboratoire d'Utilisation des Lasers Intenses, Ecole Polytechnique, 91128 Palaiseau (France) Laboratoire de Physique des Gaz et des Plasmas, Universite Paris Sud, 91405 Orsay (France) Laboratoire de Physique Nucleaire des Hautes Energies, Ecole Polytechnique, 91128 Palaiseau (France) Groupe de Recherche sur l'Energetique des Milieux Ionises, Universite d'Orleans, 45000 Orleans (France) Centre de Physique Theorique, Ecole Polytechnique, 91128 Palaiseau (France)
The modulational instability of the high-phase-velocity plasma wave generated by a Nd-laser beat wave has been observed for the first time. Both ion and electron waves are detected when the electron density is close to the resonant density for which the plasma frequency is equal to the difference frequency between the two pump lasers. We also detect the presence of harmonics of the beat frequency which are a signature of high-amplitude density perturbations.
- OSTI ID:
- 7034247
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:25; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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·
OSTI ID:6685871
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Journal Article
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Sat Apr 15 00:00:00 EDT 2006
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OSTI ID:20779247
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Conference
·
Wed Jul 01 00:00:00 EDT 1992
· AIP Conference Proceedings (American Institute of Physics); (United States)
·
OSTI ID:6726254
Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700350 -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ACCELERATORS
BEAT WAVE ACCELERATORS
DATA
ELECTRON DENSITY
ELECTRON PLASMA WAVES
EXPERIMENTAL DATA
INFORMATION
INSTABILITY
ION WAVES
LASERS
LINEAR ACCELERATORS
NEODYMIUM LASERS
NUMERICAL DATA
PHASE VELOCITY
PLASMA
PLASMA INSTABILITY
PLASMA WAVES
PULSES
SOLID STATE LASERS
VELOCITY
WAVE PROPAGATION
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700350 -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ACCELERATORS
BEAT WAVE ACCELERATORS
DATA
ELECTRON DENSITY
ELECTRON PLASMA WAVES
EXPERIMENTAL DATA
INFORMATION
INSTABILITY
ION WAVES
LASERS
LINEAR ACCELERATORS
NEODYMIUM LASERS
NUMERICAL DATA
PHASE VELOCITY
PLASMA
PLASMA INSTABILITY
PLASMA WAVES
PULSES
SOLID STATE LASERS
VELOCITY
WAVE PROPAGATION