Diffusion-dominated mixing in moderate convergence implosions

Zylstra, A. B.; Hoffman, N. M.; Herrmann, H. W.; Schmitt, M. J.; Kim, Y. H.; Meaney, K.; Leatherland, A.; Gales, S.; Forrest, C.; Glebov, V. Yu.; Schoff, M.; Hoppe, M.; Ravelo, N.

doi:10.1103/PhysRevE.97.061201

Title: Diffusion-dominated mixing in moderate convergence implosions

Journal Article · Thu Jun 14 00:00:00 EDT 2018 · Physical Review E

DOI:https://doi.org/10.1103/PhysRevE.97.061201· OSTI ID:1458956

Zylstra, A. B. ^[1]; Hoffman, N. M. ^[1]; Herrmann, H. W. ^[1]; Schmitt, M. J. ^[1]; Kim, Y. H. ^[1]; Meaney, K. ^[1]; Leatherland, A. ^[2]; Gales, S. ^[2]; Forrest, C. ^[3]; Glebov, V. Yu. ^[3]; Schoff, M. ^[4]; Hoppe, M. ^[4]; Ravelo, N. ^[4]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
AWE plc, Reading (United Kingdom). Plasma Physics Dept.
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
General Atomics, San Diego, CA (United States)

High-$$Z$$ material mixed into the fuel degrades inertial fusion implosions and can prevent ignition. Mix is often assumed to be dominated by hydrodynamic instabilities, but in this paper we report Omega data, using shells with $${\sim}150\mathrm{nm}$$ deuterated layers to gain unprecedented resolution, which give strong evidence that the dominant mix mechanism is diffusion for these moderate temperature ($${\lesssim}6$$ keV) and convergence ($${\sim}12$$) implosions. Finally, small-scale instability-driven or turbulent mix is negligible.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP); LANL Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC52-06NA25396; NA0001808; AC52-06NA52396

OSTI ID:: 1458956

Alternate ID(s):: OSTI ID: 1454311

Report Number(s):: LA-UR-17-27467; TRN: US1901536

Journal Information:: Physical Review E, Vol. 97, Issue 6; ISSN 2470-0045

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 16 works

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Using cylindrical implosions to investigate hydrodynamic instabilities in convergent geometry Sauppe, J. P.; Palaniyappan, S.; Loomis, E. N. Matter and Radiation at Extremes, Vol. 4, Issue 6 https://doi.org/10.1063/1.5090999	journal	November 2019
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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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