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Laser driven electron acceleration in a CNT embedded gas jet target

Published online by Cambridge University Press:  15 August 2014

Ashok Kumar ,
Deepak Dahiya  and
V. K. Tripathi
Ashok Kumar*
Affiliation:
Department of Physics, AIAS, Amity University, Noida, India
Deepak Dahiya
Affiliation:
Department of Physics, IIT Delhi, New Delhi, India
V. K. Tripathi
Affiliation:
Department of Physics, IIT Delhi, New Delhi, India
*
Address correspondence and reprint requests to: Ashok Kumar, Department of Physics, AIAS, Amity University, Noida, UP, 201303, India. E-mail: [email protected]
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Abstract

The bubble regime acceleration of electrons by a short pulse laser in a carbon nanotube (CNT) embedded plasma is investigated, employing two-dimensional Particle-in-Cell simulations. The laser converts the CNT placed on the laser axis into dense plasma and expels the electrons out, to form a co-moving positive charged sheet inside the bubble. The additional field generated due to sheet enhances the energy of the monoenergetic bunch by about 5% and their number by 5–20%. For a typical 40 fs, 7.5 × 1019 Wcm−2 pulse in an underdense plasma of density n0, CNT of thickness 25 nm and electron density 30n0, produces a monoenergetic bunch of 115 MeV with 5% energy spread. When CNT density is raised to 90n0, the energy gain, energy spread and accelerated charge increases further. The analytical framework supports these features.

Keywords

Electron accelerationLaserWakefield acceleration
Type
Research Article
Information
Laser and Particle Beams , Volume 32 , Issue 3 , September 2014 , pp. 495 - 500
Copyright
Copyright © Cambridge University Press 2014 

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References

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