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Title: The control of hot-electron preheat in shock-ignition implosions

Abstract

In the shock-ignition scheme for inertial confinement fusion, hot electrons resulting from laser–plasma instabilities can play a major role during the late stage of the implosion. This article presents the results of an experiment performed on OMEGA in the so-called “40 + 20 configuration.” Using a recent calibration of the time-resolved hard x-ray diagnostic, the hot electrons’ temperature and total energy were measured. One-dimensional radiation–hydrodynamic simulations have been performed that include hot electrons and are in agreement with the measured neutron-rate–averaged areal density. For an early spike launch, both experiment and simulations show the detrimental effect of hot electrons on areal density and neutron yield. Lastly, for a later spike launch, this effect is minimized because of a higher compression of the target.

Authors:
 [1];  [2];  [2];  [3];  [4]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [5];  [2]; ORCiD logo [3];  [2];  [2];  [2]
+ Show Author Affiliations
  1. Univ. de Bordeaux (France). Centre Lasers Intenses et Applications, CELIA; Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
  2. Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
  3. Univ. de Bordeaux (France). Centre Lasers Intenses et Applications, CELIA
  4. Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics; Univ. of Rochester, Rochester, NY (United States). Dept. of Physics and Astronomy; Univ. of Rochester, Rochester, NY (United States). Dept. of Mechanical Engineering
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1457359
Alternate Identifier(s):
OSTI ID: 1438280
Grant/Contract Number:  
NA0001944
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 5; 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

Citation Formats

Trela, J., Theobald, W., Anderson, K. S., Batani, D., Betti, R., Casner, A., Delettrez, J. A., Frenje, J. A., Glebov, V. Yu., Ribeyre, X., Solodov, A. A., Stoeckl, M., and Stoeckl, C. The control of hot-electron preheat in shock-ignition implosions. United States: N. p., 2018. Web. doi:10.1063/1.5020981.
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Trela, J., Theobald, W., Anderson, K. S., Batani, D., Betti, R., Casner, A., Delettrez, J. A., Frenje, J. A., Glebov, V. Yu., Ribeyre, X., Solodov, A. A., Stoeckl, M., & Stoeckl, C. The control of hot-electron preheat in shock-ignition implosions. United States. https://doi.org/10.1063/1.5020981
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Trela, J., Theobald, W., Anderson, K. S., Batani, D., Betti, R., Casner, A., Delettrez, J. A., Frenje, J. A., Glebov, V. Yu., Ribeyre, X., Solodov, A. A., Stoeckl, M., and Stoeckl, C. Tue . "The control of hot-electron preheat in shock-ignition implosions". United States. https://doi.org/10.1063/1.5020981. https://www.osti.gov/servlets/purl/1457359.
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@article{osti_1457359,
title = {The control of hot-electron preheat in shock-ignition implosions},
author = {Trela, J. and Theobald, W. and Anderson, K. S. and Batani, D. and Betti, R. and Casner, A. and Delettrez, J. A. and Frenje, J. A. and Glebov, V. Yu. and Ribeyre, X. and Solodov, A. A. and Stoeckl, M. and Stoeckl, C.},
abstractNote = {In the shock-ignition scheme for inertial confinement fusion, hot electrons resulting from laser–plasma instabilities can play a major role during the late stage of the implosion. This article presents the results of an experiment performed on OMEGA in the so-called “40 + 20 configuration.” Using a recent calibration of the time-resolved hard x-ray diagnostic, the hot electrons’ temperature and total energy were measured. One-dimensional radiation–hydrodynamic simulations have been performed that include hot electrons and are in agreement with the measured neutron-rate–averaged areal density. For an early spike launch, both experiment and simulations show the detrimental effect of hot electrons on areal density and neutron yield. Lastly, for a later spike launch, this effect is minimized because of a higher compression of the target.},
doi = {10.1063/1.5020981},
journal = {Physics of Plasmas},
number = 5,
volume = 25,
place = {United States},
year = {2018},
month = {5}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1063/1.5020981
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Cited by: 19 works
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Figures / Tables:

TABLE I TABLE I: Summary of the laser parameters and the experimental neutron yield for the relevant shots.
All figures and tables (4 total)
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Works referenced in this record:

Triple-picket warm plastic-shell implosions on OMEGA
journal, January 2011

  • Radha, P. B.; Stoeckl, C.; Goncharov, V. N.
  • Physics of Plasmas, Vol. 18, Issue 1
  • DOI: 10.1063/1.3544930

Shock Ignition: A New Approach to High Gain Inertial Confinement Fusion on the National Ignition Facility
journal, July 2009

Spherical shock-ignition experiments with the 40 + 20-beam configuration on OMEGA
journal, October 2012

  • Theobald, W.; Nora, R.; Lafon, M.
  • Physics of Plasmas, Vol. 19, Issue 10
  • DOI: 10.1063/1.4763556

Physics issues for shock ignition
journal, April 2014

Shock ignition of thermonuclear fuel: principles and modelling
journal, April 2014

Dense plasma heating and shock wave generation by a beam of fast electrons
journal, October 2015

  • Llor Aisa, E.; Ribeyre, X.; Gus'kov, S.
  • Physics of Plasmas, Vol. 22, Issue 10
  • DOI: 10.1063/1.4933119

Shock Ignition of Thermonuclear Fuel with High Areal Density
journal, April 2007

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Gigabar Spherical Shock Generation on the OMEGA Laser
journal, January 2015

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journal, May 2015

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    Works referencing / citing this record:

    Laser-driven strong shocks with infrared lasers at intensity of 10 16 W/cm 2
    journal, November 2019

    • Antonelli, L.; Trela, J.; Barbato, F.
    • Physics of Plasmas, Vol. 26, Issue 11
    • DOI: 10.1063/1.5119697

    Hydrodynamic studies of high gain shock ignition targets: effect of low- to intermediate-mode asymmetries
    journal, November 2019

    • Atzeni, Stefano; Schiavi, Angelo; Antonelli, Luca
    • The European Physical Journal D, Vol. 73, Issue 11
    • DOI: 10.1140/epjd/e2019-100317-5
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      Figures / Tables found in this record:

      TABLE I (p. 26)table
      TABLE II (p. 27)table
      TABLE III (p. 28)table
      TABLE IV (p. 29)table
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