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Title: Measuring implosion velocities in experiments and simulations of laser-driven cylindrical implosions on the OMEGA laser

Abstract

Laser-driven magnetized liner inertial fusion (MagLIF) on OMEGA involves cylindrical implosions, a preheat beam, and an applied magnetic field. Initial experiments excluded the preheat beam and magnetic field to better characterize the implosion. X-ray self-emission as measured by framing cameras was used to determine the shell trajectory. The 1-D code LILAC was used to model the central region of the implosion, and results were compared to 2-D simulations from the HYDRA code. Post-processing of simulation output with SPECT3D and Yorick produced synthetic x-ray images that were used to compare the simulation results with the x-ray framing camera data. Quantitative analysis shows that higher measured neutron yields correlate with higher implosion velocities. The future goal is to further analyze the x-ray images to characterize the uniformity of the implosions and apply these analysis techniques to integrated laser-driven MagLIF shots to better understand the effects of preheat and the magnetic field.

Authors:
ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [2];  [1];  [1];  [1];  [1];  [1];  [1]
+ Show Author Affiliations
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  2. National Cheng Kung Univ., Tainan City (Taiwan)
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1437941
Report Number(s):
2017-42, 1400
Journal ID: ISSN 0741-3335; 2017-42, 1400, 2356; TRN: US1900365
Grant/Contract Number:  
NA0001944
Resource Type:
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 60; Journal Issue: 5; Conference: 47th Annual Anomalous Absorption Conference, Florence, OR, 11-16 June 2017; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Neutron yields; soft x-rays; experiment design; hydrodynamics; numerical simulations

Citation Formats

Hansen, E. C., Barnak, D. H., Betti, R., Campbell, E. M., Chang, P-Y, Davies, J. R., Glebov, V. Yu, Knauer, J. P., Peebles, J., Regan, S. P., and Sefkow, A. B. Measuring implosion velocities in experiments and simulations of laser-driven cylindrical implosions on the OMEGA laser. United States: N. p., 2018. Web. doi:10.1088/1361-6587/aab73f.
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Hansen, E. C., Barnak, D. H., Betti, R., Campbell, E. M., Chang, P-Y, Davies, J. R., Glebov, V. Yu, Knauer, J. P., Peebles, J., Regan, S. P., & Sefkow, A. B. Measuring implosion velocities in experiments and simulations of laser-driven cylindrical implosions on the OMEGA laser. United States. https://doi.org/10.1088/1361-6587/aab73f
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Hansen, E. C., Barnak, D. H., Betti, R., Campbell, E. M., Chang, P-Y, Davies, J. R., Glebov, V. Yu, Knauer, J. P., Peebles, J., Regan, S. P., and Sefkow, A. B. Wed . "Measuring implosion velocities in experiments and simulations of laser-driven cylindrical implosions on the OMEGA laser". United States. https://doi.org/10.1088/1361-6587/aab73f. https://www.osti.gov/servlets/purl/1437941.
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@article{osti_1437941,
title = {Measuring implosion velocities in experiments and simulations of laser-driven cylindrical implosions on the OMEGA laser},
author = {Hansen, E. C. and Barnak, D. H. and Betti, R. and Campbell, E. M. and Chang, P-Y and Davies, J. R. and Glebov, V. Yu and Knauer, J. P. and Peebles, J. and Regan, S. P. and Sefkow, A. B.},
abstractNote = {Laser-driven magnetized liner inertial fusion (MagLIF) on OMEGA involves cylindrical implosions, a preheat beam, and an applied magnetic field. Initial experiments excluded the preheat beam and magnetic field to better characterize the implosion. X-ray self-emission as measured by framing cameras was used to determine the shell trajectory. The 1-D code LILAC was used to model the central region of the implosion, and results were compared to 2-D simulations from the HYDRA code. Post-processing of simulation output with SPECT3D and Yorick produced synthetic x-ray images that were used to compare the simulation results with the x-ray framing camera data. Quantitative analysis shows that higher measured neutron yields correlate with higher implosion velocities. The future goal is to further analyze the x-ray images to characterize the uniformity of the implosions and apply these analysis techniques to integrated laser-driven MagLIF shots to better understand the effects of preheat and the magnetic field.},
doi = {10.1088/1361-6587/aab73f},
journal = {Plasma Physics and Controlled Fusion},
number = 5,
volume = 60,
place = {United States},
year = {Wed Apr 04 00:00:00 EDT 2018},
month = {Wed Apr 04 00:00:00 EDT 2018}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1088/1361-6587/aab73f
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Works referenced in this record:

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Laser-driven magnetized liner inertial fusion
journal, June 2017

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    Works referencing / citing this record:

    Ion-beam-driven Planetary Physics Research at FAIR
    journal, October 2018

    • Tahir, N. A.; Shutov, A.; Lomonosov, I. V.
    • The Astrophysical Journal Supplement Series, Vol. 238, Issue 2
    • DOI: 10.3847/1538-4365/aadd4c

    Optimization of laser-driven cylindrical implosions on the OMEGA laser
    journal, December 2018

    • Hansen, E. C.; Barnak, D. H.; Chang, P. -Y.
    • Physics of Plasmas, Vol. 25, Issue 12
    • DOI: 10.1063/1.5055776

    Laser entrance window transmission and reflection measurements for preheating in magnetized liner inertial fusion
    journal, June 2018

    • Davies, J. R.; Bahr, R. E.; Barnak, D. H.
    • Physics of Plasmas, Vol. 25, Issue 6
    • DOI: 10.1063/1.5030107

    Inferring fuel areal density from secondary neutron yields in laser-driven magnetized liner inertial fusion
    journal, February 2019

    • Davies, J. R.; Barnak, D. H.; Betti, R.
    • Physics of Plasmas, Vol. 26, Issue 2
    • DOI: 10.1063/1.5082960
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