Laser Induced Tunnel Ionization and Electron Density Evolution in Air(Gases, Plasmas and Electric Discharges)

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概要

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• An indigenously built Ti:sapphire laser system delivering 50mJ, 100fs pulses at a repetition rate of 10Hz, is employed to tunnel ionize air at 1 atm pressure and form a plasma channel. The laser is line focused using a cylindrical lens to a spot size of 20μm×1mm. A folded wave interferometry is used to deduce the radial electron density profile by measuring the phase shift and employing Abel inversion. The maximum value of chord-integrated electron density and radial electron density are estimated to be approximately equal to 3.0×10^<16>cm^<-2> and 4.0×10^<18>cm^<-3> respectively with density scale length of 20μm. These results have been theoretically interpreted by developing a unified formalism of tunnel ionization. The experimental results are in reasonable agreement with the theory.

• 2005-08-15

著者

• Brussaard G.

  Department Of Applied Physics Technical University Eindhoven

• TRIPATHI V.

  Physics Department, Indian Institute of Technology

• Tiwari Pawan

  Physics Department Indian Institute Of Technology

• v. d.

  Department of Applied Physics, Technical University Eindhoven

関連論文

• Laser Induced Tunnel Ionization and Electron Density Evolution in Air(Gases, Plasmas and Electric Discharges)
• Laser Induced Tunnel Ionization and Electron Density Evolution in Air(Gases, Plasmas and Electric Discharges)

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