Formation and Microfilamentation of Spiral Density Waves in Plasmas Induced by Circularly Polarized Field Ionization

C. K. Huang, C. Zhang, K. A. Marsh, C. Joshi, J. Wang

研究成果: 雜誌貢獻期刊論文同行評審

摘要

The formation and subsequent self-organization of a spiral electron density modulation initialized in a plasma produced by optical-field ionization of various gas species is studied. Our analytical model predicts that the spiral density modulation results from space-dependent drift velocities of the ionized electrons due to the spatial and temporal intensity distributions of the circularly polarized ionizing laser. The spiral topology of the electron density has been validated by three-dimensional particle-in-cell simulations. Simulations further show that the spiral density modulation subsequently self-organizes to form numerous microfilaments, i.e., thin strands that arise because of a modified streaming instability.

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文章編號225101
期刊Physical Review Letters
133
發行號22
DOIs
出版狀態已出版 - 29 11月 2024

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