Optimal laser intensity profiles for a uniform target illumination in direct-drive inertial confinement fusion

Temporal, M.; Canaud, B.; Garbett, Warren; Ramis, R.

doi:10.1017/hpl.2014.42

Cited by 9 publications

(2 citation statements)

References 18 publications

(27 reference statements)

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“…It has recently been shown that uniform solutions of the illumination model can be obtained for any general laser–capsule configuration (Temporal et al. 2014 c ). Once the number of the laser beams and their spatial distributions are defined, the model is solved by an iterative procedure.…”

Section: Optimal Laser Intensity Profilesmentioning

confidence: 99%

Effect of the laser intensity profile on the shock non-uniformity in a directly driven spherical target

et al. 2015

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An axially symmetric laser beam configuration irradiating a spherical capsule has been considered in the context of inertial confinement fusion (ICF). The laser beams are located at co-latitudes 49° and 131° and mimic the quad positions in the second cone of the Laser Mégajoule Facility. The capsule is directly irradiated by the laser beams whose energy deposition generates a nearly spherical shock wave. Two-dimensional hydrodynamic numerical simulations have been performed to analyse the non-uniformity of the shock wavefront launched inward throughout the target. Different laser intensity profiles, calculated by the illumination model, have been tested. The performance, in terms of shock non-uniformity, has been compared, and it is found that with an appropriate choice of the laser intensity profile it is possible to control the shock non-uniformity at early times.

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Section: Optimal Laser Intensity Profilesmentioning

confidence: 99%

Effect of the laser intensity profile on the shock non-uniformity in a directly driven spherical target

et al. 2015

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“…2002, 2004, 2007; Temporal & Canaud 2009, 2011; Temporal et al. 2011, 2014 a , b , c , d , 2015 a , b , c ; Canaud & Temporal 2010; Ramis et al . 2014, 2019) that can lead to different quantitative results.…”

Section: Introductionmentioning

confidence: 99%

Direct-drive target designs as energetic particle sources for the Laser MégaJoule facility

2021

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This work aims to analyse the possibility of directly driven imploding spherical targets in order to create a source of energetic particles (neutrons, protons, alphas, tritium and 3He ions) for the Laser MégaJoule facility. D3He gas-filled spherical SiO2 glass pellets, irradiated by an absorbed laser intensity of 1014 W cm−2 or 1015 W cm−2 have been considered. Depending on the absorbed laser intensity and the amount of the ablated glass layer two distinct regimes have been identified: a massive pusher and an exploding pusher. Both regimes are analysed in terms of hydrodynamics and fast particle spectra. Energetic particle time-resolved spectra are calculated and used to infer ionic temperatures and total areal densities. A parametric study has been performed by varying the shell thickness and target inner radius for both laser absorbed intensities.

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P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

Weber

Bechet

Borneis

et al. 2017

Matter and Radiation at Extremes

137

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ELI-Beamlines (ELI-BL), one of the three pillars of the Extreme Light Infrastructure endeavour, will be in a unique position to perform research in high-energy-density-physics (HEDP), plasma physics and ultra-high intensity (UHI) (1022W/cm2) laser–plasma interaction. Recently the need for HED laboratory physics was identified and the P3 (plasma physics platform) installation under construction in ELI-BL will be an answer. The ELI-BL 10 PW laser makes possible fundamental research topics from high-field physics to new extreme states of matter such as radiation-dominated ones, high-pressure quantum ones, warm dense matter (WDM) and ultra-relativistic plasmas. HEDP is of fundamental importance for research in the field of laboratory astrophysics and inertial confinement fusion (ICF). Reaching such extreme states of matter now and in the future will depend on the use of plasma optics for amplifying and focusing laser pulses. This article will present the relevant technological infrastructure being built in ELI-BL for HEDP and UHI, and gives a brief overview of some research under way in the field of UHI, laboratory astrophysics, ICF, WDM, and plasma optics.

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Optimal laser intensity profiles for a uniform target illumination in direct-drive inertial confinement fusion

Cited by 9 publications

References 18 publications

Effect of the laser intensity profile on the shock non-uniformity in a directly driven spherical target

Effect of the laser intensity profile on the shock non-uniformity in a directly driven spherical target

Direct-drive target designs as energetic particle sources for the Laser MégaJoule facility

P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

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