Journal ArticleDOI
Laser Electron Accelerator
Toshiki Tajima,John M. Dawson +1 more
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In this paper, an intense electromagnetic pulse can create a weak of plasma oscillations through the action of the nonlinear ponderomotive force, and electrons trapped in the wake can be accelerated to high energy.Abstract:
An intense electromagnetic pulse can create a weak of plasma oscillations through the action of the nonlinear ponderomotive force. Electrons trapped in the wake can be accelerated to high energy. Existing glass lasers of power density ${10}^{18}$W/${\mathrm{cm}}^{2}$ shone on plasmas of densities ${10}^{18}$ ${\mathrm{cm}}^{\ensuremath{-}3}$ can yield gigaelectronvolts of electron energy per centimeter of acceleration distance. This acceleration mechanism is demonstrated through computer simulation. Applications to accelerators and pulsers are examined.read more
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Journal ArticleDOI
A tunable electron beam source using trapping of electrons in a density down-ramp in laser wakefield acceleration
TL;DR: A numerical study concludes that this tunable electron accelerator makes it suitable for a wide range of applications, from those requiring short pulse length and low emittance, such as the free-electron lasers, to those requiring high-charge, large-emittance bunches to maximize betatron X-ray generation.
Journal ArticleDOI
Laser plasma acceleration of electrons: towards the production of monoenergetic beams
Karl Krushelnick,Zulfikar Najmudin,Stuart Mangles,Alexander Thomas,Mingsheng Wei,B. Walton,A. Gopal,Edward B. Clark,A. E. Dangor,Sven Fritzler,C. D. Murphy,Peter Norreys,Warren Mori,J. G. Gallacher,Dino A. Jaroszynski,R. Viskup +15 more
TL;DR: In this article, the interaction of high intensity laser pulses with underdense plasma is investigated experimentally using a range of laser parameters and energetic electron production mechanisms are compared, and it is clear that the physics of these interactions changes significantly depending not only on the interaction intensity but also on the laser pulse length.
Journal ArticleDOI
Temporal characterization of ultrashort linearly chirped electron bunches generated from a laser wakefield accelerator
Chaojie Zhang,Chaojie Zhang,Jianfei Hua,Y. Wan,Y. Wan,Baoshan Guo,C. H. Pai,Y. P. Wu,Fei Li,Fei Li,Hsu-Hsin Chu,Y. Q. Gu,Warren Mori,Chan Joshi,Jyhpyng Wang,Wei Lu +15 more
TL;DR: In this article, a method for diagnosing the temporal characteristics of ultrashort electron bunches with linear energy chirp generated from a laser wakefield accelerator is described, where the ionization-injected bunch interacts with the back of the drive laser, it is deflected and stretched along the direction of the electric field of the laser.
Journal ArticleDOI
THz cavities and injectors for compact electron acceleration using laser-driven THz sources
TL;DR: In this paper, a design methodology for developing ultrasmall electron injectors and accelerators based on cascaded cavities excited by short multicycle THz pulses obtained from laser-driven THz generation schemes is presented.
Journal ArticleDOI
Laser wakefield acceleration of electrons with ionization injection in a pure N5+ plasma waveguide
TL;DR: In this article, a 1.5mm long pure helium-like nitrogen plasma waveguide was used to stabilize the high energy electron beam pointing and reduce the beam divergence. But the results were confirmed by 3D particle-in-cell simulations.