2009/06/30 by A. Yu. Okulov · 11 citations
Engineering · Physics and Astronomy · #Acoustic wave #Angular momentum #Atomic physics #Classical mechanics #Computational physics #Electron #Ion acoustic wave #Laser #Laser-Matter Interactions and Applications #Laser-Plasma Interactions and Diagnostics #Laser-induced spectroscopy and plasma #Magnetic field #Mechanics #Optics #Paraxial approximation #Physics #Pinch #Plasma #Quantum mechanics #Rotation (mathematics) #Vortex #astro-ph.SR #cond-mat.quant-gas #nlin.PS #physics.plasm-ph
paper · pdf · doi:10.1016/j.physleta.2010.09.014
published in Physics Letters A 374(44), 4523-4527 (Elsevier BV) · 6 pages, 2 figures, accepted to publication in Physics Letters A
arxiv created 2010/09/06 · openalex publication_date 2010/09/13 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The interaction of the two counter-propagating ultrashort laser pulses with a singular wavefronts in the thin slice of the underdense plasma is considered. It is shown that ion-acoustic wave is excited via Brillouin three-wave resonance by corkscrew interference pattern of a paraxial singular laser beams. The orbital angular momentum carried by light is transferred to plasma ion-acoustic vortex. The rotation of the density perturbations of electron fluid is the cause of helical current which produce the kilogauss axial quasi-static magnetic field. The exact analytical configurations are presented for an ion-acoustic current field and magnetic induction. The range of experimentally accessible parameters is evaluated.