M
Michail Tzoufras
Researcher at University of California, Los Angeles
Publications - 62
Citations - 3131
Michail Tzoufras is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Laser & Electron. The author has an hindex of 23, co-authored 62 publications receiving 2897 citations. Previous affiliations of Michail Tzoufras include University of Oxford & Rutherford Appleton Laboratory.
Papers
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Journal ArticleDOI
Generating multi-GeV electron bunches using single stage laser wakefield acceleration in a 3D nonlinear regime
Wei Lu,Michail Tzoufras,C. Joshi,Frank Tsung,Warren Mori,Jorge Vieira,Ricardo Fonseca,Luis O. Silva +7 more
TL;DR: In this article, a phenomenological framework for laser wakefield acceleration (LWFA) in the 3D nonlinear regime was developed, in which the plasma electrons are expelled by the radiation pressure of a short pulse laser, leading to nearly complete blowout.
Journal ArticleDOI
A nonlinear theory for multidimensional relativistic plasma wave wakefieldsa)
TL;DR: In this article, a nonlinear kinetic theory for multidimensional plasma wave wakes with phase velocities near the speed of light is presented, which is appropriate for describing plasma wakes excited in the so-called blowout regime by either electron beams or laser pulses.
Journal ArticleDOI
Beam Loading in the Nonlinear Regime of Plasma-Based Acceleration
Michail Tzoufras,Wei Lu,Frank Tsung,Chengkun Huang,Warren Mori,Tom Katsouleas,Jorge Vieira,Ricardo Fonseca,Luis O. Silva +8 more
TL;DR: A theory that describes how to load negative charge into a nonlinear, three-dimensional plasma wakefield is presented and it is shown that very high beam-loading efficiency can be achieved, while the energy spread of the bunch is conserved.
Journal ArticleDOI
Observation of synchrotron radiation from electrons accelerated in a petawatt-laser-generated plasma cavity.
Stefan Kneip,S. R. Nagel,C. Bellei,Nicolas Bourgeois,A. E. Dangor,Amrutha Gopal,R. Heathcote,Stuart Mangles,Jean-Raphael Marques,Anatoly Maksimchuk,P. M. Nilson,K. Ta Phuoc,S. Reed,Michail Tzoufras,Frank Tsung,Louise Willingale,Warren Mori,Antoine Rousse,Karl Krushelnick,Karl Krushelnick,Zulfikar Najmudin +20 more
TL;DR: The dynamics of plasma electrons in the focus of a petawatt laser beam are studied via measurements of their x-ray synchrotron radiation, finding the critical energy of the measured syn chrotron spectrum is found to scale as the Maxwellian temperature of the simultaneously measured electron spectra.
Journal Article
Beam loading in the nonlinear regime of plasma-based acceleration
Abstract: A theory that describes how to load negative charge into a nonlinear, three-dimensional plasma wakefield is presented. In this regime, a laser or an electron beam blows out the plasma electrons and creates a nearly spherical ion channel, which is modified by the presence of the beam load. Analytical solutions for the fields and the shape of the ion channel are derived. It is shown that very high beam-loading efficiency can be achieved, while the energy spread of the bunch is conserved. The theoretical results are verified with the particle-in-cell code OSIRIS.