skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Enhanced hot-electron production and strong-shock generation in hydrogen-rich ablators for shock ignition

Abstract

Experiments were performed with CH, Be, C, and SiO2 ablators interacting with high-intensity UV laser radiation (5 × 1015 W/cm2, λ = 351 nm) to determine the optimum material for hot-electron production and strong-shock generation. Significantly more hot electrons are produced in CH (up to ~13% instantaneous conversion efficiency), while the amount is a factor of ~2 to 3 lower in the other ablators. A larger hot-electron fraction is correlated with a higher effective ablation pressure. As a result, the higher conversion efficiency in CH is attributed to stronger damping of ion-acoustic waves because of the presence of light H ions.

Authors:
 [1]; ORCiD logo [1];  [2];  [1];  [3];  [1];  [1];  [1];  [1];  [4]; ORCiD logo [1];  [1]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [1];  [7];  [8];  [8];  [8]; ORCiD logo [8] more »;  [9] « less
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Univ. of Rochester, Rochester, NY (United States); Univ. of Science and Technology of China, Hefei (People's Republic of China)
  3. Univ. of Rochester, Rochester, NY (United States); CEA, DAM, DIF, Arpajon (France)
  4. Univ. of Rochester, Rochester, NY (United States); Chinese Academy of Engineering Physics, Mianyang (People's Republic of China)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. CEA, DAM, DIF, Arpajon (France); Univ. de Bordeaux CNRS-CEA, Talence (France)
  7. Univ. of California-San Diego, La Jolla, CA (United States)
  8. Univ. de Bordeaux CNRS-CEA, Talence (France)
  9. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1417651
Alternate Identifier(s):
OSTI ID: 1411997
Report Number(s):
2017-62, 1367
Journal ID: ISSN 1070-664X; 2017-62, 2323, 1367; TRN: US1801097
Grant/Contract Number:  
NA0001944; FC02-04ER54789
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 12; 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

Theobald, W., Bose, A., Yan, R., Betti, R., Lafon, M., Mangino, D., Christopherson, A. R., Stoeckl, C., Seka, W., Shang, W., Michel, D. T., Ren, C., Nora, R. C., Casner, A., Peebles, J., Beg, F. N., Ribeyre, X., Llor Aisa, E., Colaitis, A., Tikhonchuk, V., and Wei, M. S. Enhanced hot-electron production and strong-shock generation in hydrogen-rich ablators for shock ignition. United States: N. p., 2017. Web. doi:10.1063/1.4986797.
Theobald, W., Bose, A., Yan, R., Betti, R., Lafon, M., Mangino, D., Christopherson, A. R., Stoeckl, C., Seka, W., Shang, W., Michel, D. T., Ren, C., Nora, R. C., Casner, A., Peebles, J., Beg, F. N., Ribeyre, X., Llor Aisa, E., Colaitis, A., Tikhonchuk, V., & Wei, M. S. Enhanced hot-electron production and strong-shock generation in hydrogen-rich ablators for shock ignition. United States. doi:10.1063/1.4986797.
Theobald, W., Bose, A., Yan, R., Betti, R., Lafon, M., Mangino, D., Christopherson, A. R., Stoeckl, C., Seka, W., Shang, W., Michel, D. T., Ren, C., Nora, R. C., Casner, A., Peebles, J., Beg, F. N., Ribeyre, X., Llor Aisa, E., Colaitis, A., Tikhonchuk, V., and Wei, M. S. Fri . "Enhanced hot-electron production and strong-shock generation in hydrogen-rich ablators for shock ignition". United States. doi:10.1063/1.4986797. https://www.osti.gov/servlets/purl/1417651.
@article{osti_1417651,
title = {Enhanced hot-electron production and strong-shock generation in hydrogen-rich ablators for shock ignition},
author = {Theobald, W. and Bose, A. and Yan, R. and Betti, R. and Lafon, M. and Mangino, D. and Christopherson, A. R. and Stoeckl, C. and Seka, W. and Shang, W. and Michel, D. T. and Ren, C. and Nora, R. C. and Casner, A. and Peebles, J. and Beg, F. N. and Ribeyre, X. and Llor Aisa, E. and Colaitis, A. and Tikhonchuk, V. and Wei, M. S.},
abstractNote = {Experiments were performed with CH, Be, C, and SiO2 ablators interacting with high-intensity UV laser radiation (5 × 1015 W/cm2, λ = 351 nm) to determine the optimum material for hot-electron production and strong-shock generation. Significantly more hot electrons are produced in CH (up to ~13% instantaneous conversion efficiency), while the amount is a factor of ~2 to 3 lower in the other ablators. A larger hot-electron fraction is correlated with a higher effective ablation pressure. As a result, the higher conversion efficiency in CH is attributed to stronger damping of ion-acoustic waves because of the presence of light H ions.},
doi = {10.1063/1.4986797},
journal = {Physics of Plasmas},
number = 12,
volume = 24,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

First Observation of Ion Acoustic Waves Produced by the Langmuir Decay Instability
journal, March 2000


Effect of nonthermal electrons on the shock formation in a laser driven plasma
journal, April 2015

  • Nicolaï, Ph.; Feugeas, J. -L.; Nguyen-bui, T.
  • Physics of Plasmas, Vol. 22, Issue 4
  • DOI: 10.1063/1.4917472

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


An analytical and numerical investigation of ion acoustic waves in a two‐ion plasma
journal, November 1994

  • Vu, H. X.; Wallace, J. M.; Bezzerides, B.
  • Physics of Plasmas, Vol. 1, Issue 11
  • DOI: 10.1063/1.870889

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


Initial experiments on the shock-ignition inertial confinement fusion concept
journal, May 2008

  • Theobald, W.; Betti, R.; Stoeckl, C.
  • Physics of Plasmas, Vol. 15, Issue 5
  • DOI: 10.1063/1.2885197

Indications of Strongly Flux-Limited Electron Thermal Conduction in Laser-Target Experiments
journal, March 1975


Inertial-confinement fusion with lasers
journal, May 2016

  • Betti, R.; Hurricane, O. A.
  • Nature Physics, Vol. 12, Issue 5
  • DOI: 10.1038/nphys3736

Hard x-ray detectors for OMEGA and NIF
journal, January 2001

  • Stoeckl, C.; Glebov, V. Yu.; Meyerhofer, D. D.
  • Review of Scientific Instruments, Vol. 72, Issue 1
  • DOI: 10.1063/1.1322621

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


Spherical strong-shock generation for shock-ignition inertial fusiona)
journal, May 2015

  • Theobald, W.; Nora, R.; Seka, W.
  • Physics of Plasmas, Vol. 22, Issue 5
  • DOI: 10.1063/1.4920956

Direct-drive–ignition designs with mid-Z ablators
journal, March 2015

  • Lafon, M.; Betti, R.; Anderson, K. S.
  • Physics of Plasmas, Vol. 22, Issue 3
  • DOI: 10.1063/1.4914835

Initial performance results of the OMEGA laser system
journal, January 1997


Increasing Hydrodynamic Efficiency by Reducing Cross-Beam Energy Transfer in Direct-Drive-Implosion Experiments
journal, March 2012


Reduction of laser imprinting using polarization smoothing on a solid-state fusion laser
journal, April 1999

  • Boehly, T. R.; Smalyuk, V. A.; Meyerhofer, D. D.
  • Journal of Applied Physics, Vol. 85, Issue 7
  • DOI: 10.1063/1.369702

Ablation Pressure Driven by an Energetic Electron Beam in a Dense Plasma
journal, December 2012


Shock-ignition relevant experiments with planar targets on OMEGA
journal, February 2014

  • Hohenberger, M.; Theobald, W.; Hu, S. X.
  • Physics of Plasmas, Vol. 21, Issue 2
  • DOI: 10.1063/1.4865373

Improved laser‐beam uniformity using the angular dispersion of frequency‐modulated light
journal, October 1989

  • Skupsky, S.; Short, R. W.; Kessler, T.
  • Journal of Applied Physics, Vol. 66, Issue 8
  • DOI: 10.1063/1.344101

Shock ignition of thermonuclear fuel with high areal densities
journal, May 2008

  • Betti, R.; Theobald, W.; Zhou, C. D.
  • Journal of Physics: Conference Series, Vol. 112, Issue 2, Article No. 022024
  • DOI: 10.1088/1742-6596/112/2/022024

Generation of high pressure shocks relevant to the shock-ignition intensity regime
journal, March 2014

  • Batani, D.; Antonelli, L.; Atzeni, S.
  • Physics of Plasmas, Vol. 21, Issue 3
  • DOI: 10.1063/1.4869715

On the inhomogeneous two-plasmon instability
journal, January 1983


Observed Dependence of Stimulated Raman Scattering on Ion-Acoustic Damping in Hohlraum Plasmas
journal, September 1996


Dense plasma heating and Gbar shock formation by a high intensity flux of energetic electrons
journal, June 2013

  • Ribeyre, X.; Gus'kov, S.; Feugeas, J. -L.
  • Physics of Plasmas, Vol. 20, Issue 6
  • DOI: 10.1063/1.4811473

Experimental reduction of laser imprinting and Rayleigh–Taylor growth in spherically compressed, medium-Z-doped plastic targets
journal, June 2012

  • Fiksel, G.; Hu, S. X.; Goncharov, V. A.
  • Physics of Plasmas, Vol. 19, Issue 6
  • DOI: 10.1063/1.4729732

Influence of laser induced hot electrons on the threshold for shock ignition of fusion reactions
journal, July 2016

  • Colaïtis, A.; Ribeyre, X.; Le Bel, E.
  • Physics of Plasmas, Vol. 23, Issue 7
  • DOI: 10.1063/1.4958808

Effect of laser illumination nonuniformity on the analysis of time-resolved x-ray measurements in uv spherical transport experiments
journal, October 1987


Enhanced Direct-Drive Implosions with Thin High- Z Ablation Layers
journal, February 2008


Demonstration of the Improved Rocket Efficiency in Direct-Drive Implosions Using Different Ablator Materials
journal, December 2013


Effect of Ion-Wave Damping on Stimulated Raman Scattering in High- Z Laser-Produced Plasmas
journal, September 1996


A polar-drive shock-ignition design for the National Ignition Facility
journal, May 2013

  • Anderson, K. S.; Betti, R.; McKenty, P. W.
  • Physics of Plasmas, Vol. 20, Issue 5
  • DOI: 10.1063/1.4804635

Suppression of Rayleigh–Taylor instability due to radiative ablation in brominated plastic targets
journal, May 2004

  • Fujioka, Shinsuke; Sunahara, Atsushi; Ohnishi, Naofumi
  • Physics of Plasmas, Vol. 11, Issue 5
  • DOI: 10.1063/1.1705654

Measurements of the ablation-front trajectory and low-mode nonuniformity in direct-drive implosions using x-ray self-emission shadowgraphy
journal, January 2015

  • Michel, D. T.; Davis, A. K.; Armstrong, W.
  • High Power Laser Science and Engineering, Vol. 3
  • DOI: 10.1017/hpl.2015.15

Raman and Brillouin scattering of electromagnetic waves in inhomogeneous plasmas
journal, January 1974


Shock ignition: an alternative scheme for HiPER
journal, December 2008


Hydrodynamic simulations of long-scale-length two-plasmon–decay experiments at the Omega Laser Facility
journal, March 2013

  • Michel, D. T.; Edgell, D. H.; Froula, D. H.
  • Physics of Plasmas, Vol. 20, Issue 3
  • DOI: 10.1063/1.4794285

Crossed-beam energy transfer in implosion experiments on OMEGA
journal, December 2010

  • Igumenshchev, I. V.; Edgell, D. H.; Goncharov, V. N.
  • Physics of Plasmas, Vol. 17, Issue 12
  • DOI: 10.1063/1.3532817

Evidence of plasma fluctuations and their effect on the growth of stimulated Brillouin and stimulated Raman scattering in laser plasmas
journal, May 1998

  • Montgomery, D. S.; Afeyan, B. B.; Cobble, J. A.
  • Physics of Plasmas, Vol. 5, Issue 5
  • DOI: 10.1063/1.872868

Experiment in Planar Geometry for Shock Ignition Studies
journal, May 2012


Hohlraum energetics and implosion symmetry with elliptical phase plates using a multi-cone beam geometry on OMEGA
journal, May 2008