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Title: Filamentation of magnetosonic wave and generation of magnetic turbulence in laser plasma interaction

This paper presents a theoretical model for the magnetic turbulence in laser plasma interaction due to the nonlinear coupling of magnetosonic wave with ion acoustic wave in overdense plasma. For this study, dynamical equations of magnetosonic waves and the ion acoustic waves have been developed in the presence of ponderomotive force due to the pump magnetosonic wave. Slowly converging and diverging behavior has been studied semi-analytically, this results in the formation of filaments of the magnetosonic wave. Numerical simulation has also been carried out to study nonlinear stage. From the results, it has been found that the localized structures become quite complex in nature. Further, power spectrum has been studied. Results show that the spectral index follows (∼k{sup −2.0}) scaling at smaller scale. Relevance of the present investigation has been shown with the experimental observation.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ; ;  [1] ;  [4]
  1. Centre for Energy Studies, Indian Institute of Technology Delhi, Delhi 110016 (India)
  2. (India)
  3. (Deemed University), Dayal Bagh, Agra 282005 (India)
  4. Department of Physics and Computer Science, Dayal Bagh Educational Institute (Deemed University), Dayal Bagh, Agra 282005 (India)
Publication Date:
OSTI Identifier:
22299664
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; LASERS; MAGNETOACOUSTIC WAVES; NONLINEAR PROBLEMS; PLASMA; PONDEROMOTIVE FORCE; SOUND WAVES; TURBULENCE