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Title: First results of radiation-driven, layered deuterium-tritium implosions with a 3-shock adiabat-shaped drive at the National Ignition Facility

Radiation-driven, layered deuterium-tritium plastic capsule implosions were carried out using a new, 3-shock “adiabat-shaped” drive on the National Ignition Facility. The purpose of adiabat shaping is to use a stronger first shock, reducing hydrodynamic instability growth in the ablator. The shock can decay before reaching the deuterium-tritium fuel leaving it on a low adiabat and allowing higher fuel compression. The fuel areal density was improved by ~25% with this new drive compared to similar “high-foot” implosions, while neutron yield was improved by more than 4 times, compared to “low-foot” implosions driven at the same compression and implosion velocity.
Authors:
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. General Atomics, San Diego, CA (United States)
  3. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Report Number(s):
LLNL-JRNL-672637
Journal ID: ISSN 1070-664X
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 8; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; 42 ENGINEERING
OSTI Identifier:
1234604

Smalyuk, V. A., Robey, H. F., Döppner, T., Jones, O. S., Milovich, J. L., Bachmann, B., Baker, K. L., Berzak Hopkins, L. F., Bond, E., Callahan, D. A., Casey, D. T., Celliers, P. M., Cerjan, C., Clark, D. S., Dixit, S. N., Edwards, M. J., Giraldez, E., Haan, S. W., Hamza, A. V., Hohenberger, M., Hoover, D., Hurricane, O. A., Jancaitis, K. S., Kroll, J. J., Lafortune, K. N., Landen, O. L., MacGowan, B. J., MacPhee, A. G., Nikroo, A., Pak, A., Patel, P. K., Peterson, J. L., Weber, C. R., Widmayer, C. C., and Yeamans, C.. First results of radiation-driven, layered deuterium-tritium implosions with a 3-shock adiabat-shaped drive at the National Ignition Facility. United States: N. p., Web. doi:10.1063/1.4929912.
Smalyuk, V. A., Robey, H. F., Döppner, T., Jones, O. S., Milovich, J. L., Bachmann, B., Baker, K. L., Berzak Hopkins, L. F., Bond, E., Callahan, D. A., Casey, D. T., Celliers, P. M., Cerjan, C., Clark, D. S., Dixit, S. N., Edwards, M. J., Giraldez, E., Haan, S. W., Hamza, A. V., Hohenberger, M., Hoover, D., Hurricane, O. A., Jancaitis, K. S., Kroll, J. J., Lafortune, K. N., Landen, O. L., MacGowan, B. J., MacPhee, A. G., Nikroo, A., Pak, A., Patel, P. K., Peterson, J. L., Weber, C. R., Widmayer, C. C., & Yeamans, C.. First results of radiation-driven, layered deuterium-tritium implosions with a 3-shock adiabat-shaped drive at the National Ignition Facility. United States. doi:10.1063/1.4929912.
Smalyuk, V. A., Robey, H. F., Döppner, T., Jones, O. S., Milovich, J. L., Bachmann, B., Baker, K. L., Berzak Hopkins, L. F., Bond, E., Callahan, D. A., Casey, D. T., Celliers, P. M., Cerjan, C., Clark, D. S., Dixit, S. N., Edwards, M. J., Giraldez, E., Haan, S. W., Hamza, A. V., Hohenberger, M., Hoover, D., Hurricane, O. A., Jancaitis, K. S., Kroll, J. J., Lafortune, K. N., Landen, O. L., MacGowan, B. J., MacPhee, A. G., Nikroo, A., Pak, A., Patel, P. K., Peterson, J. L., Weber, C. R., Widmayer, C. C., and Yeamans, C.. 2015. "First results of radiation-driven, layered deuterium-tritium implosions with a 3-shock adiabat-shaped drive at the National Ignition Facility". United States. doi:10.1063/1.4929912. https://www.osti.gov/servlets/purl/1234604.
@article{osti_1234604,
title = {First results of radiation-driven, layered deuterium-tritium implosions with a 3-shock adiabat-shaped drive at the National Ignition Facility},
author = {Smalyuk, V. A. and Robey, H. F. and Döppner, T. and Jones, O. S. and Milovich, J. L. and Bachmann, B. and Baker, K. L. and Berzak Hopkins, L. F. and Bond, E. and Callahan, D. A. and Casey, D. T. and Celliers, P. M. and Cerjan, C. and Clark, D. S. and Dixit, S. N. and Edwards, M. J. and Giraldez, E. and Haan, S. W. and Hamza, A. V. and Hohenberger, M. and Hoover, D. and Hurricane, O. A. and Jancaitis, K. S. and Kroll, J. J. and Lafortune, K. N. and Landen, O. L. and MacGowan, B. J. and MacPhee, A. G. and Nikroo, A. and Pak, A. and Patel, P. K. and Peterson, J. L. and Weber, C. R. and Widmayer, C. C. and Yeamans, C.},
abstractNote = {Radiation-driven, layered deuterium-tritium plastic capsule implosions were carried out using a new, 3-shock “adiabat-shaped” drive on the National Ignition Facility. The purpose of adiabat shaping is to use a stronger first shock, reducing hydrodynamic instability growth in the ablator. The shock can decay before reaching the deuterium-tritium fuel leaving it on a low adiabat and allowing higher fuel compression. The fuel areal density was improved by ~25% with this new drive compared to similar “high-foot” implosions, while neutron yield was improved by more than 4 times, compared to “low-foot” implosions driven at the same compression and implosion velocity.},
doi = {10.1063/1.4929912},
journal = {Physics of Plasmas},
number = 8,
volume = 22,
place = {United States},
year = {2015},
month = {8}
}

Works referenced in this record:

Direct-drive laser fusion: Status and prospects
journal, May 1998
  • Bodner, Stephen E.; Colombant, Denis G.; Gardner, John H.
  • Physics of Plasmas, Vol. 5, Issue 5, p. 1901-1918
  • DOI: 10.1063/1.872861