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Controlled electron injection facilitated by nanoparticles for laser wakefield acceleration

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Title
Controlled electron injection facilitated by nanoparticles for laser wakefield acceleration
Author(s)
Myung Hoon Cho; Vishwa Bandhu Pathak; Hyung Taek Kim; Chang Hee Nam
Publication Date
2018-11
Journal
SCIENTIFIC REPORTS, v.8, no., pp.16924 -
Publisher
NATURE PUBLISHING GROUP
Abstract
We propose a novel injection scheme for laser-driven wakefield acceleration in which controllable localized electron injection is obtained by inserting nanoparticles into a plasma medium. The nanoparticles provide a very confined electric field that triggers localized electron injection where nonlinear plasma waves are excited but not sufficient for background electrons self-injection. We present a theoretical model to describe the conditions and properties of the electron injection in the presence of nanoparticles. Multi-dimensional particle-in-cell (PIC) simulations demonstrate that the total charge of the injected electron beam can be controlled by the position, number, size, and density of the nanoparticles. The PIC simulation also indicates that a 5-GeV electron beam with an energy spread below 1% can be obtained with a 0.5-PW laser pulse by using the nanoparticle-assisted laser wakefield acceleration
URI
http://pr.ibs.re.kr/handle/8788114/5394
ISSN
2045-2322
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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