Accès ouvert
2024
article
OpenAlex
L. Divol, Arthur E. 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 …
us, de
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Accès ouvert
2024
article
OpenAlex
H. Abu-Shawareb, Robert L. Acree, P. A. Adams, John J. Adams et autres
On December 5, 2022, an indirect drive fusion implosion on the National Ignition Facility (NIF) achieved a target gain G_{target} of 1.5. This is the first laboratory demonstration of exceeding "scientific breakeven" (or G_{target}>1) where 2.05 MJ of 351 nm laser light …
us, gb
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Accès ouvert
2023
article
OpenAlex
Igor V. Igumenshchev, W. Theobald, C. Stöeckl, Rahul C. Shah et autres
In the dynamic-shell (DS) concept [V. N. Goncharov et al., Novel Hot-Spot Ignition Designs for Inertial Confinement Fusion with Liquid-Deuterium-Tritium Spheres, Phys. Rev. Lett. 125, 065001 (2020).PRLTAO0031-900710.1103/PhysRevLett.125.065001] for laser-driven inertial confinement fusion the deuterium-tritium fuel is initially in the form of a …
us, fr, it
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Accès ouvert
2022
article
OpenAlex
H. Abu-Shawareb, Robert L. Acree, P. A. Adams, John J. Adams et autres
For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power …
us, gb
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2022
conference-abstract
OpenAlex
A. E. Raymond, Christine M. Krauland, Eric N. Hahn, Joo-Hwan Kim et autres
Shock ignition (SI) is an inertial confinement fusion schema that uses a strong convergent shock driven by a high intensity ~10 16 W/cm 2 laser pulse to ignite a pre-compressed fusion capsule. Understanding nonlinear laser-plasma instabilities and hot electron generation is critical …
us, fr, gb
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2020
article
OpenAlex
A. S. Moore, N. B. Meezan, Jose L. Milovich, Steve A. Johnson et autres
Experiments on the National Ignition Facility (NIF) to study hohlraums lined with a 20-mg/cc 400-μm-thick Ta_{2}O_{5} aerogel at full scale (hohlraum diameter = 6.72 mm) are reported. Driven with a 1.6-MJ, 450-TW laser pulse, the performance of the foam liner is diagnosed …
us
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Accès ouvert
2020
article
OpenAlex
A. S. Moore, N. B. Meezan, C. A. Thomas, Suhas D. Bhandarkar et autres
The ablative expansion of laser-heated materials is important for determining how hohlraum cavities can be utilized for inertial confinement fusion. The utility of a low-density foam layer to reduce the density of the expanding heated hohlraum wall is demonstrated in a series …
us, gb
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Accès ouvert
2020
article
OpenAlex
Louisa A. Pickworth, Vladimir A. Smalyuk, B. A. Hammel, Christopher R. Weber et autres
us
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Accès ouvert
2020
article
OpenAlex
Vladimir A. Smalyuk, Christopher R. Weber, Otto L. Landen, S. J. Ali et autres
us
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Accès ouvert
2020
article
OpenAlex
Aiden A. Martin, James Bishop, W. Burnett, N. Alfonso et autres
us, au
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Accès ouvert
2020
article
OpenAlex
Christopher R. Weber, Daniel S. Clark, Arthur E. Pak, N. Alfonso et autres
The micrometer-scale tube that fills capsules with thermonuclear fuel in inertial confinement fusion experiments at the National Ignition Facility is also one of the implosion's main degradation sources. It seeds a perturbation that injects the ablator material into the center, radiating away …
us
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Accès ouvert
2019
article
OpenAlex
Vladimir A. Smalyuk, Christopher R. Weber, Otto L. Landen, S. J. Ali et autres
Abstract Hydrodynamic instabilities are a major factor in degradation of inertial confinement fusion (ICF) implosions. In the highest performing implosions on National Ignition Facility, yield amplification (YA) due to alpha particle heating approached ∼3, while YA of ∼15–30 is needed for ignition. …
us
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