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  1. harvest.aps.org

    fast ignition for inertial confinement fusion [3]. In addi-tion, ions can be accelerated by the strong space charge field generated by the transverse ponderomotive force of the laser which expels electrons from the region where the laser beam is intense [4,5]. Study of the ion dynamics is important as it can supply valuable information of the
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  3. ui.adsabs.harvard.edu

    Fast ignition driven by ions constitutes a valid alternative to the more conventional fast ignition scheme, which leverages relativistic electrons. In this work, we demonstrate that ion beams with charge and energy suitable to trigger the ignition spark could be generated via collisionless shocks in the expanded corona surrounding the compressed pellet. Performing two-dimensional simulations ...
    Author:Elisabetta Boella, Robert Bingham, Alan Cairns, Peter Norreys, Raoul Trines, Marija Vranic, Nitin Sh...Published:2020
  4. royalsocietypublishing.org

    It has been recently suggested that ignition could be achieved with ions generated via collisionless shocks excited directly in the plasma corona surrounding the compressed pellet [10-17]. Indeed laser-driven shock waves provide an efficient mechanism to accelerate high-quality ions with average energies of some MeVs [18-26].
    Author:E. Boella, E. Boella, R. Bingham, R. Bingham, R. A. Cairns, P. Norreys, P. Norreys, R. Trines, R. Sc...Published:2021
  5. royalsocietypublishing.org

    The nonlinear wave travels up-ramp through the plasma reflecting and accelerating the background ions. Our results suggest that protons with characteristics suitable for ion fast ignition may be achieved in this way. This article is part of a discussion meeting issue 'Prospects for high gain inertial fusion energy (part 2)'.
    Author:E. Boella, E. Boella, R. Bingham, R. Bingham, R. A. Cairns, P. Norreys, P. Norreys, R. Trines, R. Sc...Published:2021
  6. It has been recently suggested that ignition could be achieved with ions generated via collisionless shocks excited directly in the plasma corona surrounding the compressed pellet [10-17]. Indeed laser-driven shock waves provide an efficient mechanism to accelerate high-quality ions with average energies of some MeVs [18-26]. Furthermore,
    Author:E. Boella, R. Bingham, R. Bingham, R. A. Cairns, P. Norreys, P. Norreys, R. Trines, R. Scott, M. Vra...Published:2020
  7. pubs.aip.org

    Oct 16, 2024The study of high-power laser-driven ion acceleration mechanisms is important for many applications including neutron sources 1 and fast ignition fusion 2 as well as for diagnostics of high energy density plasmas. 3-5 However, at present, some properties of these sources are poorly suited for applications since many uses for ion beams require a small energy spread (i.e., a small ΔE/E, where ...
  8. harvest.aps.org

    the accelerated ion spectrum was broad [11,12]. Motivated by recent experimental results on monoenergetic accelera-tion of protons [15], we consider SWA in near critical plasma density targets at modest laser intensities. We first derive the conditions for ion reflection from an electrostatic collisionless shock as a function of the initial
  9. the shock front is higher than the kinetic energy of the upstream ions, these shockwaves can re ect the upstream ions to twice the shock velocity acting as an e cient ion accelerator. A. Theory To study the formation of electrostatic shocks, we consider the interaction of two adjacent plasma slabs with an electron temperature ratio of = T e1=T
  10. ncbi.nlm.nih.gov

    National Center for Biotechnology Information

    https://www.ncbi.nlm.nih.gov › pmc › articles › PMC7741008

    Ions accelerated by the static field associated with the HB attain an energy of 2 m p c 2 Π/(1 + 2Π 1/2) . When the HB velocity exceeds the sound speed, then a collisionless shock is generated. The latter moves with a velocity v s = c [m e n c a 0 2 / (8 m p n e)] 1 / 2 (1 + κ ad), where κ ad = 5/3 is the adiabatic coefficient .
  11. seas.ucla.edu

    Keywords: laser-driven ion acceleration, CO 2 laser, collisionless shock, 1-D PIC simulation PACS: 52.38.Kd, 52.35.Tc, 42.55.Ct, 52.65.Rr INTRODUCTION Laser-driven ion acceleration (LDIA) is capable of producing accelerated ion beams that can have a short duration, an ultra-low emittance [1], and different charge states [2].

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