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Investigation of ionization speed in field ionization with laser–plasma interaction

Published online by Cambridge University Press:  13 July 2016

Y. Tian ,
X. Jin ,
W. Yan ,
X. Gu ,
J. Yu ,
J. Li  and
B. Li
Y. Tian
Affiliation:
University of Electronic Science and Technology of China, Chengdu, China
X. Jin*
Affiliation:
University of Electronic Science and Technology of China, Chengdu, China
W. Yan
Affiliation:
University of Electronic Science and Technology of China, Chengdu, China
X. Gu
Affiliation:
University of Electronic Science and Technology of China, Chengdu, China
J. Yu
Affiliation:
University of Electronic Science and Technology of China, Chengdu, China Imperial College London, London, UK
J. Li
Affiliation:
University of Electronic Science and Technology of China, Chengdu, China
B. Li
Affiliation:
University of Electronic Science and Technology of China, Chengdu, China
*
Address correspondence and reprint requests to: X. Jin, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China. E-mail: [email protected]
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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.

Keywords

Field ionizationPlasma formationPICIonization speedLaser–plasma interaction
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 3 , September 2016 , pp. 506 - 512
Copyright
Copyright © Cambridge University Press 2016 

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References

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