Beat-wave experiments at Ecole Polytechnique

Conference · Wed Jul 01 04:00:00 EDT 1992 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:6726254

Amiranoff, F; Dyson, A; Laberge, M; Marques, J R; Moulin, F; Fabre, E ^[1]; Benkheiri, P; Jacquet, F; Meyer, J; Mine, P ^[2]; Cros, B; Matthieussent, G ^[3]; Mora, P ^[4]; Stenz, C ^[5]

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1. Laboratoire d'Utilisation des Lasers Intenses, Ecole Polytechnique 9112, Palaiseau France (France)
2. Laboratoire de Physique Nucleaire des Hautes Energies, Ecole Polytechnique 9112, Palaiseau France (France)
3. Laboratoire de Physique des Gaz et des Plasmas, Universite Paris-Sud, 9140, Orsay France (France)
4. Centre de Physique Theorique, Ecole Polytechnique 9112, Palaiseau France (France)
5. Groupe de Recherche sur l'Energetique des Milieux Ionises, Universite d'Orleans 45000 Orleans (France)

We summarize the results obtained in the context of the beat-wave experiments performed at Ecole Polytechnique in France. We first study the generation of long and homogeneous plasmas by multiphotoionization of low density gases and observe the density variation with time due to the ponderomotive force of the ionizing laser beam. In the Nd-laser beat-wave experiments we observe in the resonant conditions the generation of intense electron plasma waves. We also measure some daughter ion and electron waves generated by the decay of these primary electron waves by modulational instability (coupling with ion motions). These results show the importance of the ion hydrodynamic for the generation and the evolution of the accelerating electric fields in beat-wave experiments.

• OSTI ID: 6726254
• Report Number(s): CONF-9206193--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 279:1
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
BEAT WAVE ACCELERATORS
DENSITY
IONIZATION
LASERS
LINEAR ACCELERATORS
NEODYMIUM LASERS
PHOTOIONIZATION
PHYSICAL PROPERTIES
PLASMA WAVES
SOLID STATE LASERS
TIME DEPENDENCE