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Title: Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive

Abstract

Hydrodynamic instabilities can cause capsule defects and other perturbations to grow and degrade implosion performance in ignition experiments at the National Ignition Facility (NIF). Here, we show the first experimental demonstration that a strong unsupported first shock in indirect drive implosions at the NIF reduces ablation front instability growth leading to a 3 to 10 times higher yield with fuel ρR>1 g/cm2. As a result, this work shows the importance of ablation front instability growth during the National Ignition Campaign and may provide a path to improved performance at the high compression necessary for ignition.

Authors:
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. General Atomics, San Diego, CA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1215665
Alternate Identifier(s):
OSTI ID: 1213751; OSTI ID: 1251048
Report Number(s):
LLNL-JRNL-670698
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
NA0001857; AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 115; Journal Issue: 10; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION

Citation Formats

Casey, D. T., Milovich, J. L., Smalyuk, V. A., Clark, D. S., Robey, H. F., Pak, A., MacPhee, A. G., Baker, K. L., Weber, C. R., Ma, T., Park, H. -S., Döppner, T., Callahan, D. A., Haan, S. W., Patel, P. K., Peterson, J. L., Hoover, D., Nikroo, A., Yeamans, C. B., Merrill, F. E., Volegov, P. L., Fittinghoff, D. N., Grim, G. P., Edwards, M. J., Landen, O. L., Lafortune, K. N., MacGowan, B. J., Widmayer, C. C., Sayre, D. B., Hatarik, R., Bond, E. J., Nagel, S. R., Benedetti, L. R., Izumi, N., Khan, S., Bachmann, B., Spears, B. K., Cerjan, C. J., Gatu Johnson, M., and Frenje, J. A. Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.115.105001.
Casey, D. T., Milovich, J. L., Smalyuk, V. A., Clark, D. S., Robey, H. F., Pak, A., MacPhee, A. G., Baker, K. L., Weber, C. R., Ma, T., Park, H. -S., Döppner, T., Callahan, D. A., Haan, S. W., Patel, P. K., Peterson, J. L., Hoover, D., Nikroo, A., Yeamans, C. B., Merrill, F. E., Volegov, P. L., Fittinghoff, D. N., Grim, G. P., Edwards, M. J., Landen, O. L., Lafortune, K. N., MacGowan, B. J., Widmayer, C. C., Sayre, D. B., Hatarik, R., Bond, E. J., Nagel, S. R., Benedetti, L. R., Izumi, N., Khan, S., Bachmann, B., Spears, B. K., Cerjan, C. J., Gatu Johnson, M., & Frenje, J. A. Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive. United States. https://doi.org/10.1103/PhysRevLett.115.105001
Casey, D. T., Milovich, J. L., Smalyuk, V. A., Clark, D. S., Robey, H. F., Pak, A., MacPhee, A. G., Baker, K. L., Weber, C. R., Ma, T., Park, H. -S., Döppner, T., Callahan, D. A., Haan, S. W., Patel, P. K., Peterson, J. L., Hoover, D., Nikroo, A., Yeamans, C. B., Merrill, F. E., Volegov, P. L., Fittinghoff, D. N., Grim, G. P., Edwards, M. J., Landen, O. L., Lafortune, K. N., MacGowan, B. J., Widmayer, C. C., Sayre, D. B., Hatarik, R., Bond, E. J., Nagel, S. R., Benedetti, L. R., Izumi, N., Khan, S., Bachmann, B., Spears, B. K., Cerjan, C. J., Gatu Johnson, M., and Frenje, J. A. Tue . "Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive". United States. https://doi.org/10.1103/PhysRevLett.115.105001. https://www.osti.gov/servlets/purl/1215665.
@article{osti_1215665,
title = {Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive},
author = {Casey, D. T. and Milovich, J. L. and Smalyuk, V. A. and Clark, D. S. and Robey, H. F. and Pak, A. and MacPhee, A. G. and Baker, K. L. and Weber, C. R. and Ma, T. and Park, H. -S. and Döppner, T. and Callahan, D. A. and Haan, S. W. and Patel, P. K. and Peterson, J. L. and Hoover, D. and Nikroo, A. and Yeamans, C. B. and Merrill, F. E. and Volegov, P. L. and Fittinghoff, D. N. and Grim, G. P. and Edwards, M. J. and Landen, O. L. and Lafortune, K. N. and MacGowan, B. J. and Widmayer, C. C. and Sayre, D. B. and Hatarik, R. and Bond, E. J. and Nagel, S. R. and Benedetti, L. R. and Izumi, N. and Khan, S. and Bachmann, B. and Spears, B. K. and Cerjan, C. J. and Gatu Johnson, M. and Frenje, J. A.},
abstractNote = {Hydrodynamic instabilities can cause capsule defects and other perturbations to grow and degrade implosion performance in ignition experiments at the National Ignition Facility (NIF). Here, we show the first experimental demonstration that a strong unsupported first shock in indirect drive implosions at the NIF reduces ablation front instability growth leading to a 3 to 10 times higher yield with fuel ρR>1 g/cm2. As a result, this work shows the importance of ablation front instability growth during the National Ignition Campaign and may provide a path to improved performance at the high compression necessary for ignition.},
doi = {10.1103/PhysRevLett.115.105001},
journal = {Physical Review Letters},
number = 10,
volume = 115,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 2015},
month = {Tue Sep 01 00:00:00 EDT 2015}
}

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