Vlasov Simulations of Wave-Wave and Wave-Particle Interactions in Plasma

Eliasson, B. (Speaker)

Activity: Talk or presentation typesInvited talk

Description

Vlasov simulations are attractive due to the low numerical noise, in particular in studies of mildly nonlinear wave-wave and wave-particle interactions, or when the low-density tail of the momentum (or velocity) distribution function has to be resolved accurately. Examples include the Raman instability, investigations of nonlinear kinetic structures (Bernstein-Greene-Kruskal-like modes), and the coupling to electron Bernstein modes in magnetized plasma [1,2]. Lower-dimensional Vlasov simulations can show good convergence and thus become an attractive complement to particle-in-cell simulations. The conservation of transverse canonical momentum is conveniently used to reduce the number of momentum dimensions in Vlasov simulations of relativistic laser-plasma interactions [3], and in more general cases fluid moments can be taken in transverse directions and fully kinetic modelling kept along dominant directions. We will present Vlasov simulations of relativistic laser-plasma interactions [2,4], the interaction with electron and ion holes in plasmas [5], and parametric interactions with electron Bernstein waves in magnetized plasmas [6].Reference[1] B. Eliasson, Transp. Theor. Stat. Phys.39(5&7), 387-465 (2010).[2] B. Eliasson, C. S. Liu, P. K. Shukla and N. Kumar, PhysicaScripta73, 632-638 (2006).[3] B. Eliasson, C. S. Liu, X. Shao, R. Z. Sagdeev, and P. K. Shukla, New J. Phys.11, 073006 (2009).[4] P. K. Shukla and B. Eliasson, Phys. Rev. Lett.94, 065002 (2005).[5] B. Eliasson and P. K. Shukla, Phys. Rev. Lett.93(4), 045001, (2004); ibid. 92(9), 095006 (2004).[6] D. C. Speirs, B. Eliasson, and L. K. S. Daldorff, J. Geophys. Res. - Space Phys.122, 10638 (2017).
Period9 May 2018
Held at3rd International Conference on Matter and Radiation at Extremes
Event typeConference
Conference number3
LocationQingdao, China
Degree of RecognitionInternational

Keywords

  • laser-plasma interaction
  • Vlasov simulation