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Casey DT, Milovich JL, Smalyuk VA, et al. Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive. Phys Rev Lett. 2015;115(10):105001doi: 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. (2015). Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive. Physical review letters, 115(10), 105001. https://doi.org/10.1103/PhysRevLett.115.105001
Casey, D T, et al. "Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive." Physical review letters vol. 115,10 (2015): 105001. doi: https://doi.org/10.1103/PhysRevLett.115.105001
Casey DT, Milovich JL, Smalyuk VA, Clark DS, Robey HF, Pak A, MacPhee AG, Baker KL, Weber CR, Ma T, Park HS, Döppner T, Callahan DA, Haan SW, Patel PK, Peterson JL, Hoover D, Nikroo A, Yeamans CB, Merrill FE, Volegov PL, Fittinghoff DN, Grim GP, Edwards MJ, Landen OL, Lafortune KN, MacGowan BJ, Widmayer CC, Sayre DB, Hatarik R, Bond EJ, Nagel SR, Benedetti LR, Izumi N, Khan S, Bachmann B, Spears BK, Cerjan CJ, Gatu Johnson M, Frenje JA. Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive. Phys Rev Lett. 2015 Sep 04;115(10):105001. doi: 10.1103/PhysRevLett.115.105001. Epub 2015 Sep 01. PMID: 26382681.
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Phys Rev Lett. 2015 Sep 04;115(10):105001. doi: 10.1103/PhysRevLett.115.105001. Epub 2015 Sep 01.

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

Physical review letters

D T Casey, J L Milovich, V A Smalyuk, D S Clark, H F Robey, A Pak, A G MacPhee, K L Baker, C R Weber, T Ma, H-S Park, T Döppner, D A Callahan, S W Haan, P K Patel, J L Peterson, D Hoover, A Nikroo, C B Yeamans, F E Merrill, P L Volegov, D N Fittinghoff, G P Grim, M J Edwards, O L Landen, K N Lafortune, B J MacGowan, C C Widmayer, D B Sayre, R Hatarik, E J Bond, S R Nagel, L R Benedetti, N Izumi, S Khan, B Bachmann, B K Spears, C J Cerjan, M Gatu Johnson, J A Frenje

Affiliations

  1. Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  2. General Atomics, San Diego, California 92121, USA.
  3. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  4. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

PMID: 26382681 DOI: 10.1103/PhysRevLett.115.105001

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/cm(2). 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.

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