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Title: Core conditions for alpha heating attained in direct-drive inertial confinement fusion

Abstract

It is shown that direct-drive implosions on the OMEGA laser have achieved core conditions that would lead to significant alpha heating at incident energies available on the National Ignition Facility (NIF) scale. The extrapolation of the experimental results from OMEGA to NIF energy assumes only that the implosion hydrodynamic efficiency is unchanged at higher energies. This approach is independent of the uncertainties in the physical mechanism that degrade implosions on OMEGA, and relies solely on a volumetric scaling of the experimentally observed core conditions. It is estimated that the current best-performing OMEGA implosion [Regan et al., Phys. Rev. Lett. 117, 025001 (2016)] extrapolated to a 1.9 MJ laser driver with the same illumination configuration and laser-target coupling would produce 125 kJ of fusion energy with similar levels of alpha heating observed in current highest performing indirect-drive NIF implosions.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3];  [3];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1262304
Alternate Identifier(s):
OSTI ID: 1260858
Grant/Contract Number:  
NA0001857; NA0002949; NA0001944; FC02-04ER54789
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 94; Journal Issue: 1; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Bose, A., Woo, K. M., Betti, R., Campbell, E. M., Mangino, D., Christopherson, A. R., McCrory, R. L., Nora, R., Regan, S. P., Goncharov, V. N., Sangster, T. C., Forrest, C. J., Frenje, J., Gatu Johnson, M., Glebov, V. Yu, Knauer, J. P., Marshall, F. J., Stoeckl, C., and Theobald, W. Core conditions for alpha heating attained in direct-drive inertial confinement fusion. United States: N. p., 2016. Web. doi:10.1103/PhysRevE.94.011201.
Bose, A., Woo, K. M., Betti, R., Campbell, E. M., Mangino, D., Christopherson, A. R., McCrory, R. L., Nora, R., Regan, S. P., Goncharov, V. N., Sangster, T. C., Forrest, C. J., Frenje, J., Gatu Johnson, M., Glebov, V. Yu, Knauer, J. P., Marshall, F. J., Stoeckl, C., & Theobald, W. Core conditions for alpha heating attained in direct-drive inertial confinement fusion. United States. doi:10.1103/PhysRevE.94.011201.
Bose, A., Woo, K. M., Betti, R., Campbell, E. M., Mangino, D., Christopherson, A. R., McCrory, R. L., Nora, R., Regan, S. P., Goncharov, V. N., Sangster, T. C., Forrest, C. J., Frenje, J., Gatu Johnson, M., Glebov, V. Yu, Knauer, J. P., Marshall, F. J., Stoeckl, C., and Theobald, W. Thu . "Core conditions for alpha heating attained in direct-drive inertial confinement fusion". United States. doi:10.1103/PhysRevE.94.011201. https://www.osti.gov/servlets/purl/1262304.
@article{osti_1262304,
title = {Core conditions for alpha heating attained in direct-drive inertial confinement fusion},
author = {Bose, A. and Woo, K. M. and Betti, R. and Campbell, E. M. and Mangino, D. and Christopherson, A. R. and McCrory, R. L. and Nora, R. and Regan, S. P. and Goncharov, V. N. and Sangster, T. C. and Forrest, C. J. and Frenje, J. and Gatu Johnson, M. and Glebov, V. Yu and Knauer, J. P. and Marshall, F. J. and Stoeckl, C. and Theobald, W.},
abstractNote = {It is shown that direct-drive implosions on the OMEGA laser have achieved core conditions that would lead to significant alpha heating at incident energies available on the National Ignition Facility (NIF) scale. The extrapolation of the experimental results from OMEGA to NIF energy assumes only that the implosion hydrodynamic efficiency is unchanged at higher energies. This approach is independent of the uncertainties in the physical mechanism that degrade implosions on OMEGA, and relies solely on a volumetric scaling of the experimentally observed core conditions. It is estimated that the current best-performing OMEGA implosion [Regan et al., Phys. Rev. Lett. 117, 025001 (2016)] extrapolated to a 1.9 MJ laser driver with the same illumination configuration and laser-target coupling would produce 125 kJ of fusion energy with similar levels of alpha heating observed in current highest performing indirect-drive NIF implosions.},
doi = {10.1103/PhysRevE.94.011201},
journal = {Physical Review E},
number = 1,
volume = 94,
place = {United States},
year = {2016},
month = {7}
}

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