Low Fuel Convergence Path to Direct-Drive Fusion Ignition

Molvig, Kim; Schmitt, Mark J.; Albright, Brian James; Dodd, Evan S.; Hoffman, Nelson M.; McCall, Gene H.; Ramsey, Scott D.

doi:10.1103/PhysRevLett.116.255003

Low Fuel Convergence Path to Direct-Drive Fusion Ignition

Journal Article · Fri Jun 24 00:00:00 EDT 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.116.255003· OSTI ID:1410615

^[1]; ^[2]; ^[2]; ^[2]; ^[2]; McCall, Gene H. ^[2]; Ramsey, Scott D. ^[2]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

A new class of inertial fusion capsules is presented that combines multishell targets with laser direct drive at low intensity (2.8 × 10¹⁴ W/cm²) to achieve robust ignition. The targets consist of three concentric, heavy, metal shells, enclosing a volume of tens of μg of liquid deuterium-tritium fuel. Ignition is designed to occur well “upstream” from stagnation, with minimal pusher deceleration to mitigate interface Rayleigh-Taylor growth. As a result, laser intensities below thresholds for laser plasma instability and cross beam energy transfer facilitate high hydrodynamic efficiency (~10%).

Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE; USDOE (originally DOE/LANL)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1410615

Alternate ID(s):: OSTI ID: 1259339

Report Number(s):: LA-UR--16-20796

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 116; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Laser-direct-drive program: Promise, challenge, and path forward Campbell, E. M.; Goncharov, V. N.; Sangster, T. C. Matter and Radiation at Extremes, Vol. 2, Issue 2 https://doi.org/10.1016/j.mre.2017.03.001	journal	March 2017
The physics of long- and intermediate-wavelength asymmetries of the hot spot: Compression hydrodynamics and energetics Bose, A.; Betti, R.; Shvarts, D. Physics of Plasmas, Vol. 24, Issue 10 https://doi.org/10.1063/1.4995250	journal	October 2017
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Design considerations for indirectly driven double shell capsules Montgomery, D. S.; Daughton, W. S.; Albright, B. J. Physics of Plasmas, Vol. 25, Issue 9 https://doi.org/10.1063/1.5042478	journal	September 2018
First experiments on Revolver shell collisions at the OMEGA laser Scheiner, Brett; Schmitt, Mark J.; Hsu, Scott C. Physics of Plasmas, Vol. 26, Issue 7 https://doi.org/10.1063/1.5099975	journal	July 2019
Direct-drive double-shell implosion: A platform for burning-plasma physics studies Hu, S. X.; Epstein, R.; Theobald, W. Physical Review E, Vol. 100, Issue 6 https://doi.org/10.1103/physreve.100.063204	journal	December 2019
Subpercent-Scale Control of 3D Low Modes of Targets Imploded in Direct-Drive Configuration on OMEGA Michel, D. T.; Igumenshchev, I. V.; Davis, A. K. Physical Review Letters, Vol. 120, Issue 12 https://doi.org/10.1103/physrevlett.120.125001	journal	March 2018
First experiments on Revolver shell collisions at the OMEGA Laser Scheiner, Brett; Schmitt, Mark J.; Hsu, Scott C. arXiv https://doi.org/10.48550/arxiv.1904.07086	text	January 2019

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