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
2018
article
OpenAlex
S. P. Regan, Valeri N. Goncharov, T. C. Sangster, E. Michael Campbell et autres
The National Direct-Drive Inertial Confinement Fusion Program consists of the 100 Gbar Campaign on the 30 kJ, 351 nm, 60-beam OMEGA Laser System and the megajoule direct-drive (MJDD) Campaign on the 1.8 MJ, 351 nm, 192-beam National Ignition Facility (NIF). The main …
us
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Accès ouvert
2018
article
OpenAlex
Ying Liu, John H. Campbell, Ori Stein, Lijia Jiang et autres
Two-photon polymerization (2PP), which is a three-dimensional micro/nano-scale additive manufacturing process, is used to fabricate component for small custom experimental packages (“targets”) to support laser-driven, high-energy-density physics research. Of particular interest is the use of 2PP to deterministically print millimeter-scale, low-density, and …
us
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Accès ouvert
2017
article
OpenAlex
S. P. Regan, Valeri N. Goncharov, T. C. Sangster, E. Michael Campbell et autres
The goal of the National Direct-Drive Program is to demonstrate and understand the physics of laser direct drive (LDD). Efforts are underway on OMEGA for the 100-Gbar Campaign to demonstrate and understand the physics for hot-spot conditions and formation relevant for ignition …
us
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2017
article
OpenAlex
Stephan A. Letts, Jared F. Hund, Justin Sin, Jonathan Monterrosa et autres
Four different variations of doped, planar targets were fabricated using multilayer glow discharge polymerization for the foil thickness campaign at the Extended Performance Facility at the University of Rochester. The planar film targets consisted of from one to four layers of CH, …
us
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Accès ouvert
2017
article
OpenAlex
Irene Prencipe, J. Fuchs, S. Pascarelli, Douglass W. Schumacher et autres
A number of laser facilities coming online all over the world promise the capability of high-power laser experiments with shot repetition rates between 1 and 10 Hz. Target availability and technical issues related to the interaction environment could become a bottleneck for …
de, fr, us, ro, cz, jp, gb, hu, it, es
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2013
article
OpenAlex
C.K. Li, Fredrick Hampton Seguin, Johan A. Frenje, N. Sinenian et autres
Proton imaging of hohlraum plasma stagnation in inertial-confinement-fusion experiments, Li, C.K., Séguin, F.H., Frenje, J.A., Sinenian, N., Rosenberg, M.J., Manuel, M.J.-E, Rinderknecht, H.G., Zylstra, A.B., Petrasso, R.D., Amendt, P.A., Landen, O.L., Mackinnon, A.J., Town, R.P.J., Wilks, S.C., Betti, R., Meyerhofer, D.D., Soures, …
us
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2013
article
OpenAlex
R. R. Paguio, Daniel Jasion, K. M. Saito, Michael E. Schoff et autres
Deuterated polyethylene films as thin as 50 μm have been produced using a four-post heated press method. These films are then cut into the desired shape (foil) and are used for the magnetic recoil spectrometer (MRS). The MRS is a diagnostic tool …
us
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2013
article
OpenAlex
Jared F. Hund, J. W. Crippen, K. Clark, N. Martínez et autres
The National Ignition Campaign (NIC) target consists of precisely machined and assembled components. A subset of the components of this target is the aluminum shielding around the silicon support and cooling arms, which is designed to alleviate harmful unconverted light reflecting from …
us
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2013
article
OpenAlex
A. B. R. Cooper, Marilyn B. Schneider, S. A. MacLaren, A. S. Moore et autres
Streaked x-ray radiography images of annular patterns in an evolving tantalum oxide foam under the influence of a driven, subsonic radiation wave were obtained on the National Ignition Facility. This is the first successful radiography measurement of the evolution of well-defined foam …
us, gb
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2011
article
OpenAlex
Jared F. Hund, Javier Jaquez, Christian P. Deck, Kexin Quan
Lithographed wire targets have recently been fabricated for use as backlighter targets for experimental campaigns at the OMEGA laser facility. These experiments required targets with 10-μm gold wires lithographed onto plastic. A process was developed using lithography to make these targets via …
us
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