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Title: Direct-drive measurements of laser-imprint-induced shock velocity nonuniformities [First direct-drive measurements of laser-imprint-induced shock velocity nonuniformities]

Abstract

Perturbations in the velocity profile of a laser-ablation-driven shock wave seeded by speckle in the spatial beam intensity (i.e., laser imprint) have been measured. Direct measurements of these velocity perturbations were recorded using a two-dimensional high-resolution velocimeter probing plastic material shocked by a 100-ps picket laser pulse from the OMEGA laser system. The measured results for experiments with one, two, and five overlapping beams incident on the target clearly demonstrate a reduction in long-wavelength (>25– μm) perturbations with an increasing number of overlapping laser beams, consistent with theoretical expectations. Furthermore, these experimental measurements are crucial to validate radiation-hydrodynamics simulations of laser imprint for laser direct drive inertial confinement fusion research since they highlight the significant (factor of 3) underestimation of the level of seeded perturbation when the microphysics processes for initial plasma formation, such as multiphoton ionization are neglected.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [1];  [1];  [1]
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. Bordeaux-CNRS-CEA, Talence (France)
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States). Lab for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
Contributing Org.:
[Laboratory for Laser Energetics, University of Rochester]
OSTI Identifier:
1542619
Alternate Identifier(s):
OSTI ID: 1546318
Report Number(s):
[2018-284, 1507]
[Journal ID: ISSN 2470-0045; PLEEE8; 2018-284, 1507, 2467]
Grant/Contract Number:  
[NA0003856; AC52-07NA27344]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
[ Journal Volume: 99; Journal Issue: 6]; 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

Peebles, J. L., Hu, S. X., Theobald, W., Goncharov, V. N., Whiting, N., Celliers, P. M., Ali, S. J., Duchateau, G., Campbell, E. M., Boehly, T. R., and Regan, S. P. Direct-drive measurements of laser-imprint-induced shock velocity nonuniformities [First direct-drive measurements of laser-imprint-induced shock velocity nonuniformities]. United States: N. p., 2019. Web. doi:10.1103/PhysRevE.99.063208.
Peebles, J. L., Hu, S. X., Theobald, W., Goncharov, V. N., Whiting, N., Celliers, P. M., Ali, S. J., Duchateau, G., Campbell, E. M., Boehly, T. R., & Regan, S. P. Direct-drive measurements of laser-imprint-induced shock velocity nonuniformities [First direct-drive measurements of laser-imprint-induced shock velocity nonuniformities]. United States. doi:10.1103/PhysRevE.99.063208.
Peebles, J. L., Hu, S. X., Theobald, W., Goncharov, V. N., Whiting, N., Celliers, P. M., Ali, S. J., Duchateau, G., Campbell, E. M., Boehly, T. R., and Regan, S. P. Mon . "Direct-drive measurements of laser-imprint-induced shock velocity nonuniformities [First direct-drive measurements of laser-imprint-induced shock velocity nonuniformities]". United States. doi:10.1103/PhysRevE.99.063208.
@article{osti_1542619,
title = {Direct-drive measurements of laser-imprint-induced shock velocity nonuniformities [First direct-drive measurements of laser-imprint-induced shock velocity nonuniformities]},
author = {Peebles, J. L. and Hu, S. X. and Theobald, W. and Goncharov, V. N. and Whiting, N. and Celliers, P. M. and Ali, S. J. and Duchateau, G. and Campbell, E. M. and Boehly, T. R. and Regan, S. P.},
abstractNote = {Perturbations in the velocity profile of a laser-ablation-driven shock wave seeded by speckle in the spatial beam intensity (i.e., laser imprint) have been measured. Direct measurements of these velocity perturbations were recorded using a two-dimensional high-resolution velocimeter probing plastic material shocked by a 100-ps picket laser pulse from the OMEGA laser system. The measured results for experiments with one, two, and five overlapping beams incident on the target clearly demonstrate a reduction in long-wavelength (>25–μm) perturbations with an increasing number of overlapping laser beams, consistent with theoretical expectations. Furthermore, these experimental measurements are crucial to validate radiation-hydrodynamics simulations of laser imprint for laser direct drive inertial confinement fusion research since they highlight the significant (factor of 3) underestimation of the level of seeded perturbation when the microphysics processes for initial plasma formation, such as multiphoton ionization are neglected.},
doi = {10.1103/PhysRevE.99.063208},
journal = {Physical Review E},
number = [6],
volume = [99],
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
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Improved laser‐beam uniformity using the angular dispersion of frequency‐modulated light
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Direct-drive inertial confinement fusion: A review
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Extreme ultraviolet probing of laser imprint in a thin foil using an x-ray laser backlighter
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Measurements of direct drive laser imprint in thin foils by radiography using an x-ray laser backlighter
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A model for multiphoton absorption in dielectric materials induced by short laser pulses at moderate intensities
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X-ray preheating of window materials in direct-drive shock-wave timing experiments
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    Works referencing / citing this record:

    Velocity sensing interferometer (VISAR) modification
    journal, January 1979

    • Hemsing, Willard F.
    • Review of Scientific Instruments, Vol. 50, Issue 1
    • DOI: 10.1063/1.1135672

    X‐ray laser radiography of perturbations due to imprint of laser speckle in 0.35 μm laser irradiation of a thin Si foil
    journal, March 1996

    • Kalantar, D. H.; Barbee, T. W.; DaSilva, L. B.
    • Review of Scientific Instruments, Vol. 67, Issue 3
    • DOI: 10.1063/1.1146809

    Extreme ultraviolet probing of laser imprint in a thin foil using an x-ray laser backlighter
    journal, January 1997

    • Kalantar, D. H.; Da Silva, L. B.; Glendinning, S. G.
    • Review of Scientific Instruments, Vol. 68, Issue 1
    • DOI: 10.1063/1.1147747

    Effects of thin high-Z layers on the hydrodynamics of laser-accelerated plastic targets
    journal, May 2002

    • Obenschain, S. P.; Colombant, D. G.; Karasik, M.
    • Physics of Plasmas, Vol. 9, Issue 5
    • DOI: 10.1063/1.1464541

    Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA
    journal, May 2005

    • Radha, P. B.; Collins, T. J. B.; Delettrez, J. A.
    • Physics of Plasmas, Vol. 12, Issue 5
    • DOI: 10.1063/1.1882333

    Measurements of laser-imprinting sensitivity to relative beam mistiming in planar plastic foils driven by multiple overlapping laser beams
    journal, July 2005

    • Smalyuk, V. A.; Goncharov, V. N.; Boehly, T. R.
    • Physics of Plasmas, Vol. 12, Issue 7
    • DOI: 10.1063/1.1943900

    X-ray preheating of window materials in direct-drive shock-wave timing experiments
    journal, December 2006

    • Theobald, W.; Miller, J. E.; Boehly, T. R.
    • Physics of Plasmas, Vol. 13, Issue 12
    • DOI: 10.1063/1.2397581

    A high-resolution two-dimensional imaging velocimeter
    journal, March 2010

    • Celliers, P. M.; Erskine, D. J.; Sorce, C. M.
    • Review of Scientific Instruments, Vol. 81, Issue 3
    • DOI: 10.1063/1.3310076

    Theory of induced spatial incoherence
    journal, October 1987

    • Lehmberg, R. H.; Schmitt, A. J.; Bodner, S. E.
    • Journal of Applied Physics, Vol. 62, Issue 7
    • DOI: 10.1063/1.339419

    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

    Two-dimensional simulations of the neutron yield in cryogenic deuterium-tritium implosions on OMEGA
    journal, October 2010

    • Hu, S. X.; Goncharov, V. N.; Radha, P. B.
    • Physics of Plasmas, Vol. 17, Issue 10
    • DOI: 10.1063/1.3491467

    Reduction of time-averaged irradiation speckle nonuniformity in laser-driven plasmas due to target ablation
    journal, September 1997

    • Epstein, R.
    • Journal of Applied Physics, Vol. 82, Issue 5
    • DOI: 10.1063/1.366021

    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

    Two-dimensional imaging velocity interferometry: Data analysis techniques
    journal, April 2012

    • Erskine, David J.; Smith, R. F.; Bolme, C. A.
    • Review of Scientific Instruments, Vol. 83, Issue 4
    • DOI: 10.1063/1.4704840

    Direct-drive inertial confinement fusion: A review
    journal, November 2015

    • Craxton, R. S.; Anderson, K. S.; Boehly, T. R.
    • Physics of Plasmas, Vol. 22, Issue 11
    • DOI: 10.1063/1.4934714

    Mitigating laser-imprint effects in direct-drive inertial confinement fusion implosions with an above-critical-density foam layer
    journal, August 2018

    • Hu, S. X.; Theobald, W.; Radha, P. B.
    • Physics of Plasmas, Vol. 25, Issue 8
    • DOI: 10.1063/1.5044609

    Measurements of direct drive laser imprint in thin foils by radiography using an x-ray laser backlighter
    journal, May 1997

    • Kalantar, D. H.; Key, M. H.; Da Silva, L. B.
    • Physics of Plasmas, Vol. 4, Issue 5
    • DOI: 10.1063/1.872340

    Direct-drive hydrodynamic instability experiments on the GEKKO XII laser
    journal, November 1997

    • Azechi, H.; Nakai, M.; Shigemori, K.
    • Physics of Plasmas, Vol. 4, Issue 11
    • DOI: 10.1063/1.872528

    Multiphoton ionization of atoms
    journal, October 1991


    A model for multiphoton absorption in dielectric materials induced by short laser pulses at moderate intensities
    journal, May 2013

    • Mézel, Candice; Duchateau, Guillaume; Geneste, Grégory
    • Journal of Physics: Condensed Matter, Vol. 25, Issue 23
    • DOI: 10.1088/0953-8984/25/23/235501

    Simulations of laser imprint reduction using underdense foams and its consequences on the hydrodynamic instability growth
    journal, August 2013


    Numerical refocusing of 2d-VISAR data
    journal, May 2014