Shock-Augmented Ignition Approach to Laser Inertial Fusion

Scott, R. H. H.; Barlow, Duncan; Trickey, William; Ruocco, A.; Glize, K.; Antonelli, L.; Khan, M.; Woolsey, N. C.

doi:10.1103/physrevlett.129.195001

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…(b) Laser temporal profile in the shock-augmented ignition approach and the scheme of the capsule (adapted from Ref. [63]). …”

Section: Inertial Confinement Fusion Research In Europementioning

confidence: 99%

“…Preliminary SI experiments at the OMEGA laser facility in the United States at energy levels of 25 kJ have demonstrated the advantages of the SI scheme compared to the conventional direct-drive scheme: the creation of a strong laser-driven shocks resulted in an increased number of fusion reactions manifested in the number of detected neutrons [ 64 ] and a shock pressure exceeding 200 Mbar has been reported [ 65 ] . Other variants of the SI scheme, potentially more efficient, have been proposed: the ignition shock driven by the laser radiation and hot electrons [ 66 ] and the shock-augmented ignition by using a dip in the laser power before launching the shock [ 63 ] . The latter scheme allows a reduction in the laser spike intensity by introducing a gap between the main pulse and the spike (see Figure 3(b)) and thus decreases the undesirable nonlinear processes and increases the gain.…”

Section: Inertial Confinement Fusion Research In Europementioning

confidence: 99%

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Future for inertial-fusion energy in Europe: a roadmap

Batani,

Colaïtis,

Consoli

et al. 2023

High Pow Laser Sci Eng

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The recent achievement of fusion ignition with laser-driven technologies at the National Ignition Facility sets a historic accomplishment in fusion energy research. This accomplishment paves the way for using laser inertial fusion as a viable approach for future energy production. Europe has a unique opportunity to empower research in this field internationally, and the scientific community is eager to engage in this journey. We propose establishing a European programme on inertial-fusion energy with the mission to demonstrate laser-driven ignition in the direct-drive scheme and to develop pathway technologies for the commercial fusion reactor. The proposed roadmap is based on four complementary axes: (i) the physics of laser–plasma interaction and burning plasmas; (ii) high-energy high repetition rate laser technology; (iii) fusion reactor technology and materials; and (iv) reinforcement of the laser fusion community by international education and training programmes. We foresee collaboration with universities, research centres and industry and establishing joint activities with the private sector involved in laser fusion. This project aims to stimulate a broad range of high-profile industrial developments in laser, plasma and radiation technologies along with the expected high-level socio-economic impact.

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“…(b) Laser temporal profile in the shock-augmented ignition approach and the scheme of the capsule (adapted from Ref. [63]). …”

Section: Inertial Confinement Fusion Research In Europementioning

confidence: 99%

Section: Inertial Confinement Fusion Research In Europementioning

confidence: 99%

Future for inertial-fusion energy in Europe: a roadmap

Batani,

Colaïtis,

Consoli

et al. 2023

High Pow Laser Sci Eng

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“…In laser directly driven (LDD) inertial confinement fusion (ICF), including conventional central hot-spot direct-drive ignition [1], as well as alternative schemes such as shock ignition [2][3][4], fast ignition [5], and newly proposed doublecone ignition (DCI) [6], multiple high-power laser beams are adopted to directly irradiate the target ablator surface to drive the implosion process. The primary advantage of the LDD schemes is their high energy conversion efficiency from laser beams to the target capsule when compared to the indirectly driven ignition schemes [7], where the target absorbs the re-emitted x-ray energy generated by the laser-heated hohlraum.…”

Section: Introductionmentioning

confidence: 99%

Measurements of laser-plasma instabilities in double-cone ignition experiments relevant to the direct-drive conditions at Shenguang-II Upgrade laser facility

Zhao,

Yuan,

Dong

et al. 2024

Nucl. Fusion

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Experiments have been performed to investigate laser-plasma instabilities (LPIs) relevant to the direct-drive inertial confinement fusion (ICF) conditions at the Shenguang-II Upgrade (SG-II UP) laser facility during the double-cone ignition (DCI) experimental campaigns, with the overlapped laser intensity ranging from 6×1014 W/cm2 to 1.8×1015 W/cm2. An overall LPI scenario has been built from the collection and investigation of angularly distributed scattered light. Across broad ranges of laser and plasma parameters, relevant to the direct-drive ICF conditions, the dominance of the stimulated Raman side scattering (SRSS) was confirmed, and its coexistence with the two-plasmon decay (TPD) was also observed. Significant SRSS scattered light was observed across an extremely wide range of emission angles, concentrated at large angles, and demonstrated to be robust throughout the parameter space. Time-resolved spectral measurements show distinctly different SRSS behaviors along different angles and a slightly higher threshold compared to the TPD. The overall SRSS energy loss was measured, indicating a scattered light energy fraction of up to 6%. These results are of crucial importance for the precise assessment of the LPIs in the DCI as well as other laser directly driven ICF schemes.

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Comparison of an Argon-Fluoride Gas Laser with a Solid-State Laser for Application to Laser Fusion Energy

Bodner

2023

J Fusion Energ

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Shock-Augmented Ignition Approach to Laser Inertial Fusion

Cited by 9 publications

References 32 publications

Future for inertial-fusion energy in Europe: a roadmap

Future for inertial-fusion energy in Europe: a roadmap

Measurements of laser-plasma instabilities in double-cone ignition experiments relevant to the direct-drive conditions at Shenguang-II Upgrade laser facility

Comparison of an Argon-Fluoride Gas Laser with a Solid-State Laser for Application to Laser Fusion Energy

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