Kinetic mix mechanisms in shock-driven inertial confinement fusion implosions

Rinderknecht, H. G.; Sio, H.; Li, C. K.; Hoffman, N.; Zylstra, A. B.; Rosenberg, M. J.; Frenje, J. A.; Gatu Johnson, M.; Seguin, F. H.; Petrasso, R. D.; Betti, R.; Yu Glebov, V.; Meyerhofer, D. D.; Sangster, T. C.; Seka, W.; Stoeckl, C.; Kagan, G.; Molvig, K.; Bellei, C.; Amendt, P.; Landen, O.; Rygg, J. R.; Smalyuk, V. A.; Wilks, S.; Greenwood, A.; Nikroo, A.

doi:10.1063/1.4876615

Title: Kinetic mix mechanisms in shock-driven inertial confinement fusion implosions

Journal Article · Mon May 19 00:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4876615· OSTI ID:1172490

Rinderknecht, H. G. ^[1]; Sio, H. ^[1]; Li, C. K. ^[1]; Hoffman, N.; Zylstra, A. B. ^[1]; Rosenberg, M. J. ^[1]; Frenje, J. A. ^[1]; Gatu Johnson, M. ^[1]; Seguin, F. H. ^[1]; Petrasso, R. D. ^[1]; Betti, R. ^[2]; Yu Glebov, V. ^[2]; Meyerhofer, D. D. ^[2]; Sangster, T. C. ^[2]; Seka, W. ^[2]; Stoeckl, C. ^[2]; Kagan, G. ^[3]; Molvig, K. ^[3]; Bellei, C. ^[4]; Amendt, P. ^[4] more »

MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States). Plasma Science and Fusion Center
Lab. for Laser Energetics, Rochester, NY (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)

Shock-driven implosions of thin-shell capsules, or ''exploding pushers,'' generate low-density, high-temperature plasmas in which hydrodynamic instability growth is negligible and kinetic effects can play an important role. Data from implosions of thin deuterated-plastic shells with hydroequivalent D³He gas fills ranging from pure deuterium to pure ³He [H. G. Rinderknecht et al., Phys. Rev. Lett. 112, 135001 (2014)] were obtained to evaluate non-hydrodynamic fuel-shell mix mechanisms. Simulations of the experiments including reduced ion kinetic models support ion diffusion as an explanation for these data. Several additional kinetic mechanisms are investigated and compared to the data to determine which are important in the experiments. Shock acceleration of shell deuterons is estimated to introduce mix less than or comparable to the amount required to explain the data. Beam-target mechanisms are found to produce yields at most an order of magnitude less than the observations

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Research Organization:: MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States). Plasma Science and Fusion Center

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0002035; NA0001857; FC52-08NA28752

OSTI ID:: 1172490

Journal Information:: Physics of Plasmas, Vol. 21, Issue 5; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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