Item request has been placed! ×
Item request cannot be made. ×
loading  Processing Request

Ion acoustic instability resulting from suprathermal electrons generated by stimulated Raman scattering in laser-plasma interactions

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
اقرأ أكثر حفظ في قائمتي
  • معلومة اضافية
    • Contributors:
      DAM Île-de-France (DAM/DIF); Direction des Applications Militaires (DAM); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA); Laboratoire pour l'utilisation des lasers intenses (LULI); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X); Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Central Laser Facility (CLF); STFC Rutherford Appleton Laboratory (RAL); Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC); Laboratoire Matière sous Conditions Extrêmes (LMCE); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay; ANR-20-CE30-0030,UnRIP,Vers la compréhension des instabilités plasma relativistes(2020); European Project: 633053,EURATOM-Adhoc-2014-20,EURATOM-Adhoc-2014-20,EUROfusion(2014)
    • بيانات النشر:
      CCSD
      American Physical Society
    • الموضوع:
      2025
    • نبذة مختصرة :
      International audience ; Using space-time-resolved Thomson scattering, we investigate experimentally the development of electrostatic waves in a preformed undercritical helium plasma driven by a 1.059 μm laser pulse of ∼1.5 ps duration and ∼10$^{15-16}$ W cm$^{-2}$ mean intensity. We observe the excitation of intense ion plasma waves (IAWs) over a broad wave number range, distinct from what is expected from stimulated Brillouin scattering or Langmuir decay instability. These IAWs are correlated with the occurrence of backward stimulated Raman scattering (B-SRS) at earlier times but persist much longer than the B-SRS-driven electron plasma waves. Particle-in-cell modeling reveals that they result from an ion acoustic instability triggered by the bulk electrons drifting against the ions to neutralize the current carried by the B-SRS-generated hot electrons. The properties of the simulated unstable IAWs match well with the measurements
    • Relation:
      info:eu-repo/grantAgreement//633053/EU/Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium/EUROfusion
    • الرقم المعرف:
      10.1103/PhysRevLett.134.165102
    • الدخول الالكتروني :
      https://hal.science/hal-05042296
      https://hal.science/hal-05042296v2/document
      https://hal.science/hal-05042296v2/file/Laser_driven_ion_acoustic_instability_resub_plain%20%281%29.pdf
      https://doi.org/10.1103/PhysRevLett.134.165102
    • Rights:
      http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.ECA9EBFA