Tunable Radiation Source by Coupling Laser-Plasma-Generated Electrons to a Periodic Structure

Abstract

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Simple scalings for various regimes of electron acceleration in surface plasma waves

“…With the development of lasers of high intensity (Ik 2 0 > 10 16 W cm À2 lm 2 ), short pulse duration (<100 fs), and high contrast ($10 12 ), new electron heating mechanisms have also been proposed. [7][8][9][10][11] They involve very sharp density gradients and over-dense plasmas which do not necessarily require a resonant plasma response. Among these mechanisms are vacuum heating, 7 and the so-called ponderomotive orJ ÂB heating.…”

“…In this case, the electrons are accelerated by the resonant plasma waves excited at densities around the critical density by the interaction of a "long" laser pulse with a gentle-gradient dense plasma. With the development of lasers of high intensity (Iλ 2 0 > 10 16 W cm −2 µm 2 ), short pulse duration (< 100fs), and high contrast (∼ 10 12 ), new electron heating mechanisms have also been proposed [7][8][9][10][11]. They involve very sharp density gradients and over-dense plasmas which do not necessarily require a resonant plasma response.…”

Effects of filamentation instability on the divergence of relativistic electrons driven by ultraintense laser pulses

“…Ultraintense laser-driven REs have attracted great recent attention 1,2 due to their potential application in the areas of fast ignition laser fusion [3][4][5][6] , ion acceleration by laser-plasma interaction 7,8 , and production of ultrashort bright radiations 9 . It is essential to characterize accurately the RE divergence for these applications.…”

Direct observation of imploded core heating via fast electrons with super-penetration scheme

“…Energetic electron beams produced by the laser-plasma interaction are useful sources for particle acceleration 1 , novel radiation 2 , medical therapy 3 , the formation of warm dense matter of interest in planetary science 4,5 and astrophysics 6,7 , and particularly the development of high-gain laser-driven inertial confinement fusion (ICF) 8,9 .…”