C. Trosseille

Key metrics of progress in the NIF ignition implosions and future challenges on the path to higher yields

J. D. Lindl, O. L. Landen, S. W. Haan, Peter A. Amendt et autres

Successful demonstration of an implosion that meets the physics metrics for ignition on the National Ignition Facility (NIF) in August 2021 and demonstration of target energy gain G > 1 in December 2022 represented the culmination of more than a decade of …

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First demonstration of improved yield with reduced adiabat in inertial confinement fusion implosions on the National Ignition Facility

M. Hohenberger, D. S. Clark, Kelli Humbird, A. Pak et autres

Laser-driven, indirect-drive inertial confinement fusion (ICF) experiments at the National Ignition Facility (NIF) recently achieved a target gain greater than one, where fusion energy output exceeds input laser energy [Abu-Shawareb et al., Phys. Rev. Lett. 132, 065102 (2024)]. Despite this milestone, gain …

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Direct Experimental Proof of the Principal Role of Reduced High-Mode Hydrodynamic Mix in Recent Ignition Success on NIF

B. Bachmann, L. Divol, A. Pak, N. Birge et autres

This Letter details the role of reduced hydrodynamic mix in achieving the first fusion plasma to satisfy the Lawson criterion for ignition. Using novel 3D measurements of the temperature and density of the burning deuterium-tritium plasma across a series of experiments, we …

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First Demonstration of Improved Fusion Yield with Increased Compression through Reduced Adiabat in Inertial Confinement Fusion Experiments at the National Ignition Facility

M. Hohenberger, D. S. Clark, Kelli Humbird, A. Pak et autres

Recent advancements in indirect-drive inertial confinement fusion (ICF) experiments at the National Ignition Facility (NIF) have achieved a significant milestone by demonstrating target gains greater than one, yet future applications necessitate much higher target gains. One approach to achieving improved implosion performance …

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Dynamic localized hot spot mix extraction from images in ICF experiments

S. F. Khan, L. Divol, A. Pak, T. J. Hilsabeck et autres

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Thermonuclear performance variability near ignition at the National Ignition Facility

L. Divol, A. Pak, B. Bachmann, K. L. Baker et autres

We describe our current understanding of the variability and degradation mechanisms observed through a series of five indirectly driven inertial fusion implosions fielded at the National Ignition Facility in the fall of 2021, four of which attempted to reproduce the first experiment …

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Identifying, quantifying, and mitigating background with the time-resolved x-ray diffraction platform at the National Ignition Facility

L. R. Benedetti, N. E. Palmer, Cara E. Vennari, P. R. Nyholm et autres

The time-resolved x-ray diffraction platform at the National Ignition Facility (NIF) fields electronic sensors closer to the exploding laser-driven target than any other NIF diagnostic in order to directly detect diffracted x rays from highly compressed materials. We document strategies to characterize …

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Mitigation Strategies for Diagnostic Data Degradation due to High Neutron Yield of ICF Experiments at the NIF

C. Trosseille

Inertial Confinement Fusion experiments taking place at the National Ignition Facility are generating ever increasing amounts of fusion energy, with the Deuterium Tritium fusion neutron yield growing a hundredfold, over the past ten years.Strategies must be developed to mitigate this harsh environment's …

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Diagnosing inertial confinement fusion ignition

A. S. Moore, L. Divol, B. Bachmann, R. M. Bionta et autres

Abstract Fusion ignition by inertial confinement requires compression and heating of the fusion fuel to temperatures in excess of 5 keV and densities exceeding hundreds of g/cc. In August 2021, this scientific milestone was surpassed at the National Ignition Facility (NIF), when …

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X-ray imaging and electron temperature evolution in laser-driven magnetic reconnection experiments at the national ignition facility

V. Valenzuela-Villaseca, Jacob M. Molina, D. B. Schaeffer, S. Malko et autres

We present results from x-ray imaging of high-aspect-ratio magnetic reconnection experiments driven at the National Ignition Facility. Two parallel, self-magnetized, elongated laser-driven plumes are produced by tiling 40 laser beams. A magnetic reconnection layer is formed by the collision of the plumes. …

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Characterization of a CMOS camera based film digitization platform for gated x-ray imaging diagnostics at the National Ignition Facility

N. W. Ruof, C. Trosseille, J. P. Holder, S. R. Nagel

Hardened gated x-ray detectors use photographic film as the data recording medium due to its low sensitivity to the high-yield neutron environments at the National Ignition Facility (NIF). The photographic film is digitized with a Photometric Data Systems (PDS) microdensitometer, which measures …

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Mitigation strategies for time-resolved x-ray diagnostic data degradation due to high neutron yield of ICF experiments at the NIF

C. Trosseille, M. Beach, P. M. Bell, A. C. Carpenter et autres

Inertial confinement fusion experiments taking place at the National Ignition Facility are generating ever increasing amounts of fusion energy, with the deuterium tritium fusion neutron yield growing a hundredfold over the past ten years. Strategies must be developed to mitigate this harsh …

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