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Title: Exploration of the Transition from the Hydrodynamic-like to the Strongly Kinetic Regime in Shock-Driven Implosions

Abstract

Clear evidence of the transition from hydrodynamiclike to strongly kinetic shock-driven implosions is, for the first time, revealed and quantitatively assessed. Implosions with a range of initial equimolar D3He gas densities show that as the density is decreased, hydrodynamic simulations strongly diverge from and increasingly over-predict the observed nuclear yields, from a factor of ~2 at 3.1 mg/cm3 to a factor of 100 at 0.14 mg/cm3. (The corresponding Knudsen number, the ratio of ion mean-free path to minimum shell radius, varied from 0.3 to 9; similarly, the ratio of fusion burn duration to ion diffusion time, another figure of merit of kinetic effects, varied from 0.3 to 14.) This result is shown to be unrelated to the effects of hydrodynamic mix. As a first step to garner insight into this transition, a reduced ion kinetic (RIK) model that includes gradient-diffusion and loss-term approximations to several transport processes was implemented within the framework of a one-dimensional radiation-transport code. After empirical calibration, the RIK simulations reproduce the observed yield trends, largely as a result of ion diffusion and the depletion of the reacting tail ions.

Authors:
 [1];  [1];  [2];  [3];  [4];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [5];  [5];  [5];  [5];  [6];  [5];  [5];  [5] more »;  [5];  [5];  [3];  [3];  [3];  [2];  [2];  [7] « less
  1. MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States). Plasma Science and Fusion Center
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Univ. of Roma, Roma (Italy). Dipartimento SBAI
  5. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  6. Univ. of Rochester, NY (United States). Lab. for Laser EnergeticsUniv. of Rochester, NY (United States). Lab. for Laser Energetics
  7. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1172483
Grant/Contract Number:  
NA0001857; FC52-08NA28752; 5-24431; NA0002035; 415935-G; 2012 C26A12CZH2; PRIN 2009FCC9MS; B597367
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 18; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Rosenberg, M. J., Rinderknecht, H. G., Hoffman, N. M., Amendt, P. A., Atzeni, S., Zylstra, A. B., Li, C. K., Seguin, F. H., Sio, H., Johnson, M. Gatu, Frenje, J. A., Petrasso, R. D., Glebov, V. Yu., Stoeckl, C., Seka, W., Marshall, F. J., Delettrez, J. A., Sangster, T. C., Betti, R., Goncharov, V. N., Meyerhofer, D. D., Skupsky, S., Bellei, C., Pino, J., Wilks, S. C., Kagan, G., Molvig, K., and Nikroo, A. Exploration of the Transition from the Hydrodynamic-like to the Strongly Kinetic Regime in Shock-Driven Implosions. United States: N. p., 2014. Web. doi:10.1103/PhysRevLett.112.185001.
Rosenberg, M. J., Rinderknecht, H. G., Hoffman, N. M., Amendt, P. A., Atzeni, S., Zylstra, A. B., Li, C. K., Seguin, F. H., Sio, H., Johnson, M. Gatu, Frenje, J. A., Petrasso, R. D., Glebov, V. Yu., Stoeckl, C., Seka, W., Marshall, F. J., Delettrez, J. A., Sangster, T. C., Betti, R., Goncharov, V. N., Meyerhofer, D. D., Skupsky, S., Bellei, C., Pino, J., Wilks, S. C., Kagan, G., Molvig, K., & Nikroo, A. Exploration of the Transition from the Hydrodynamic-like to the Strongly Kinetic Regime in Shock-Driven Implosions. United States. https://doi.org/10.1103/PhysRevLett.112.185001
Rosenberg, M. J., Rinderknecht, H. G., Hoffman, N. M., Amendt, P. A., Atzeni, S., Zylstra, A. B., Li, C. K., Seguin, F. H., Sio, H., Johnson, M. Gatu, Frenje, J. A., Petrasso, R. D., Glebov, V. Yu., Stoeckl, C., Seka, W., Marshall, F. J., Delettrez, J. A., Sangster, T. C., Betti, R., Goncharov, V. N., Meyerhofer, D. D., Skupsky, S., Bellei, C., Pino, J., Wilks, S. C., Kagan, G., Molvig, K., and Nikroo, A. 2014. "Exploration of the Transition from the Hydrodynamic-like to the Strongly Kinetic Regime in Shock-Driven Implosions". United States. https://doi.org/10.1103/PhysRevLett.112.185001. https://www.osti.gov/servlets/purl/1172483.
@article{osti_1172483,
title = {Exploration of the Transition from the Hydrodynamic-like to the Strongly Kinetic Regime in Shock-Driven Implosions},
author = {Rosenberg, M. J. and Rinderknecht, H. G. and Hoffman, N. M. and Amendt, P. A. and Atzeni, S. and Zylstra, A. B. and Li, C. K. and Seguin, F. H. and Sio, H. and Johnson, M. Gatu and Frenje, J. A. and Petrasso, R. D. and Glebov, V. Yu. and Stoeckl, C. and Seka, W. and Marshall, F. J. and Delettrez, J. A. and Sangster, T. C. and Betti, R. and Goncharov, V. N. and Meyerhofer, D. D. and Skupsky, S. and Bellei, C. and Pino, J. and Wilks, S. C. and Kagan, G. and Molvig, K. and Nikroo, A.},
abstractNote = {Clear evidence of the transition from hydrodynamiclike to strongly kinetic shock-driven implosions is, for the first time, revealed and quantitatively assessed. Implosions with a range of initial equimolar D3He gas densities show that as the density is decreased, hydrodynamic simulations strongly diverge from and increasingly over-predict the observed nuclear yields, from a factor of ~2 at 3.1 mg/cm3 to a factor of 100 at 0.14 mg/cm3. (The corresponding Knudsen number, the ratio of ion mean-free path to minimum shell radius, varied from 0.3 to 9; similarly, the ratio of fusion burn duration to ion diffusion time, another figure of merit of kinetic effects, varied from 0.3 to 14.) This result is shown to be unrelated to the effects of hydrodynamic mix. As a first step to garner insight into this transition, a reduced ion kinetic (RIK) model that includes gradient-diffusion and loss-term approximations to several transport processes was implemented within the framework of a one-dimensional radiation-transport code. After empirical calibration, the RIK simulations reproduce the observed yield trends, largely as a result of ion diffusion and the depletion of the reacting tail ions.},
doi = {10.1103/PhysRevLett.112.185001},
url = {https://www.osti.gov/biblio/1172483}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 18,
volume = 112,
place = {United States},
year = {Mon May 05 00:00:00 EDT 2014},
month = {Mon May 05 00:00:00 EDT 2014}
}

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Works referencing / citing this record:

The single-line-of-sight, time-resolved x-ray imager diagnostic on OMEGA
journal, October 2018


Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas
journal, January 2020


Ion Species Stratification Within Strong Shocks in Two-Ion Plasmas
text, January 2017


Self-similar solutions for multi-species plasma mixing by gradient driven transport
journal, March 2018


Kinetic effects on neutron generation in moderately collisional interpenetrating plasma flows
journal, January 2019


Kinetic mix mechanisms in shock-driven inertial confinement fusion implosions
journal, May 2014


Species separation and kinetic effects in collisional plasma shocks
journal, May 2014


Deciphering the kinetic structure of multi-ion plasma shocks
journal, November 2017


Multi-species plasma transport in 1D direct-drive ICF simulations
journal, March 2019


Yield reduction via the Knudsen layer effect in a mixture of fuel and pusher material
journal, December 2018


Investigation of ion kinetic effects in direct-drive exploding-pusher implosions at the NIF
journal, December 2014


Shock-induced mix across an ideal interface
journal, April 2017


Ion-kinetic simulations of D- 3 He gas-filled inertial confinement fusion target implosions with moderate to large Knudsen number
journal, January 2016


Compression and burning of a direct-driven thermonuclear target under the conditions of inhomogeneous heating by a multi-beam megajoule laser
journal, January 2019


Diffusion-dominated mixing in moderate convergence implosions
journal, June 2018


Ion Thermal Decoupling and Species Separation in Shock-Driven Implosions
journal, January 2015


Assessment of ion kinetic effects in shock-driven inertial confinement fusion implosions using fusion burn imaging
journal, June 2015


Self-Similar Structure and Experimental Signatures of Suprathermal Ion Distribution in Inertial Confinement Fusion Implosions
journal, September 2015


Fuel-ion diffusion in shock-driven inertial confinement fusion implosions
journal, September 2019


Hybrid particle-in-cell simulations of laser-driven plasma interpenetration, heating, and entrainment
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Deciphering the Kinetic Structure of Multi-Ion Plasma Shocks
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Imaging at an x-ray absorption edge using free electron laser pulses for interface dynamics in high energy density systems
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Spectral composition of thermonuclear particle and recoil nuclear emissions from laser fusion targets intended for modern ignition experiments
journal, June 2018


The effect of shock dynamics on compressibility of ignition-scale National Ignition Facility implosions
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Using multiple secondary fusion products to evaluate fuel ρR, electron temperature, and mix in deuterium-filled implosions at the NIF
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