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Title: First Observations of Nonhydrodynamic Mix at the Fuel-Shell Interface in Shock-Driven Inertial Confinement Implosions

Journal Article · · Physical Review Letters
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  1. MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States). Plasma Science and Fusion Center
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  4. General Atomics, San Diego, CA (United States)

A strong nonhydrodynamic mechanism generating atomic fuel-shell mix has been observed in strongly shocked inertial confinement fusion implosions of thin deuterated-plastic shells filled with 3He gas. These implosions were found to produce D3He-proton shock yields comparable to implosions of identical shells filled with a hydroequivalent 50:50 D3He gas mixture. Standard hydrodynamic mixing cannot explain this observation, as hydrodynamic modeling including mix predicts a yield an order of magnitude lower than was observed. Instead, these results can be attributed to ion diffusive mix at the fuel-shell interface.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0002035; NA0001857
OSTI ID:
1172481
Journal Information:
Physical Review Letters, Vol. 112, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 56 works
Citation information provided by
Web of Science

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Cited By (30)

Correlation and transport properties for mixtures at constant pressure and temperature journal June 2017
Cherenkov detector analysis for implosions with multiple nuclear reactions journal October 2018
Transport properties of an asymmetric mixture in the dense plasma regime journal June 2016
Observations of Multiple Nuclear Reaction Histories and Fuel-Ion Species Dynamics in Shock-Driven Inertial Confinement Fusion Implosions journal January 2019
Kinetic simulations of fusion ignition with hot-spot ablator mix journal September 2019
Ion Species Stratification Within Strong Shocks in Two-Ion Plasmas text January 2017
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
Using a 2-shock 1D platform at NIF to measure the effect of convergence on mix and symmetry journal October 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
Diffusion-dominated mixing in moderate convergence implosions journal June 2018
Plasma kinetic effects on interfacial mix journal November 2016
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 journal November 2019
Anomalous mix induced by a collisionless shock wave in an inertial confinement fusion hohlraum journal August 2019
Ion species stratification within strong shocks in two-ion plasmas journal March 2018
Checking the Salpeter enhancement of nuclear reactions at intermediate coupling in asymmetric mixtures journal January 2019
Sudden diffusion of turbulent mixing layers in weakly coupled plasmas under compression journal December 2019
Deciphering the Kinetic Structure of Multi-Ion Plasma Shocks text January 2017
Kinetic physics in ICF: present understanding and future directions journal April 2018
The effect of shock dynamics on compressibility of ignition-scale National Ignition Facility implosions journal November 2014
Development of the CD Symcap platform to study gas-shell mix in implosions at the National Ignition Facility journal September 2014
Yield degradation in inertial-confinement-fusion implosions due to shock-driven kinetic fuel-species stratification and viscous heating journal May 2018

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