Investigation of ionization speed in field ionization with laser–plasma interaction. (13th July 2016)

• Record Type: Journal Article
• Authors: Tian, Y.; Jin, X.; Yan, W.; Gu, X.; Yu, J.; Li, J.; Li, B.
• Is Part Of: Laser and particle beams. Volume 34:Number 3(2016)
• Page Start: 506
• Page End: 512
• Publication Date: 2016-07-13
• Subjects: Field ionization, -- Plasma formation, -- PIC, -- Ionization speed, -- Laser–plasma interaction; Laser beams -- Periodicals; Particle beams -- Periodicals; 535.5
• DOI: 10.1017/S0263034616000392
• Languages: English
• ISSNs: 0263-0346

Abstract

Abstract: The effects of target density and laser intensity on ionization speed are studied in this paper by 1D3V particle-in-cell simulations, where the field ionization of single atom is involved basing Ammosov-Delone-Krainov model in the form of Penetrante and Bardsley. To consider the ionization speed, the evolution of plasma density for the helium target, particularly, the ion density change rate near the target front surface, are discussed. The results show that not only the laser intensity, but also the target density will affect field ionization and further affect the plasma formation. This work will be helpful for further understanding of plasma formation in intense laser pulse. Also, it may be benefit for the setup of initial parameters before the simulation of laser–plasma interaction.