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Title: Fuel–shell mix and yield degradation in kinetic shock-driven inertial confinement fusion implosions

Abstract

Fuel–shell mix in kinetic plasma conditions is probed using nuclear and x-ray self-emission in shock-driven, D3He-gas-filled inertial confinement fusion implosions. As initial gas fill density decreases, measured nuclear yields and ion temperatures are lower than expected as compared to radiation-hydrodynamic simulations. Spatially and temporally resolved x-ray emissions indicate significant mixing at the fuel–shell interface in implosions with low initial gas fill density. In conclusion, this observed fuel–shell mix introduces a substantial amount of shell ions into the center of the implosion prior to and during shock flash and is the key mechanism needed in the kinetic-ion simulations to match experimental nuclear yields.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [5]; ORCiD logo [5]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [5]; ORCiD logo [3];  [3]; ORCiD logo [3]
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France); Univ. Paris-Saclay, Bruyères-le-Châtel (France)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. Univ. of Rome (Italy)
  5. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Laser Users' Facility; European Union (EU)
OSTI Identifier:
1883006
Alternate Identifier(s):
OSTI ID: 1876946
Report Number(s):
LLNL-JRNL-807757
Journal ID: ISSN 1070-664X; 1012996; TRN: US2307957
Grant/Contract Number:  
AC52-07NA27344; NA0001857; NA0002949; NA0002905; NA0003868; NA0002035; FC52–08NA28752; 101052200; FC52- 08NA28752
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 29; Journal Issue: 7; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; hydrodynamics simulations; plasma physics; fusion experiments

Citation Formats

Sio, Hong, Larroche, Olivier, Bose, Arijit, Atzeni, Stefano, Frenje, Johan A., Kabadi, Neel V., Gatu Johnson, Maria, Li, Chikang K., Glebov, Vladimir, Stoeckl, Christian, Lahmann, Brandon, Adrian, Patrick J., Regan, Sean P., Birkel, Andrew, Seguin, F. H., and Petrasso, Richard D. Fuel–shell mix and yield degradation in kinetic shock-driven inertial confinement fusion implosions. United States: N. p., 2022. Web. doi:10.1063/5.0087905.
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Sio, Hong, Larroche, Olivier, Bose, Arijit, Atzeni, Stefano, Frenje, Johan A., Kabadi, Neel V., Gatu Johnson, Maria, Li, Chikang K., Glebov, Vladimir, Stoeckl, Christian, Lahmann, Brandon, Adrian, Patrick J., Regan, Sean P., Birkel, Andrew, Seguin, F. H., & Petrasso, Richard D. Fuel–shell mix and yield degradation in kinetic shock-driven inertial confinement fusion implosions. United States. https://doi.org/10.1063/5.0087905
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Sio, Hong, Larroche, Olivier, Bose, Arijit, Atzeni, Stefano, Frenje, Johan A., Kabadi, Neel V., Gatu Johnson, Maria, Li, Chikang K., Glebov, Vladimir, Stoeckl, Christian, Lahmann, Brandon, Adrian, Patrick J., Regan, Sean P., Birkel, Andrew, Seguin, F. H., and Petrasso, Richard D. Wed . "Fuel–shell mix and yield degradation in kinetic shock-driven inertial confinement fusion implosions". United States. https://doi.org/10.1063/5.0087905. https://www.osti.gov/servlets/purl/1883006.
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@article{osti_1883006,
title = {Fuel–shell mix and yield degradation in kinetic shock-driven inertial confinement fusion implosions},
author = {Sio, Hong and Larroche, Olivier and Bose, Arijit and Atzeni, Stefano and Frenje, Johan A. and Kabadi, Neel V. and Gatu Johnson, Maria and Li, Chikang K. and Glebov, Vladimir and Stoeckl, Christian and Lahmann, Brandon and Adrian, Patrick J. and Regan, Sean P. and Birkel, Andrew and Seguin, F. H. and Petrasso, Richard D.},
abstractNote = {Fuel–shell mix in kinetic plasma conditions is probed using nuclear and x-ray self-emission in shock-driven, D3He-gas-filled inertial confinement fusion implosions. As initial gas fill density decreases, measured nuclear yields and ion temperatures are lower than expected as compared to radiation-hydrodynamic simulations. Spatially and temporally resolved x-ray emissions indicate significant mixing at the fuel–shell interface in implosions with low initial gas fill density. In conclusion, this observed fuel–shell mix introduces a substantial amount of shell ions into the center of the implosion prior to and during shock flash and is the key mechanism needed in the kinetic-ion simulations to match experimental nuclear yields.},
doi = {10.1063/5.0087905},
journal = {Physics of Plasmas},
number = 7,
volume = 29,
place = {United States},
year = {Wed Jul 20 00:00:00 EDT 2022},
month = {Wed Jul 20 00:00:00 EDT 2022}
}
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Journal Article:
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https://doi.org/10.1063/5.0087905
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