skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Visualizing deceleration-phase instabilities in inertial confinement fusion implosions using an “enhanced self-emission” technique at the National Ignition Facility

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.5025188· OSTI ID:1491653
ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [2]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [1] more »; ORCiD logo [1]; ORCiD logo [3];  [1]; ORCiD logo [2]; ORCiD logo [1];  [3];  [3];  [1]; ORCiD logo [1];  [1] « less
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. General Atomics, San Diego, CA (United States)

High-mode perturbations and low-mode asymmetries were measured in the deceleration phase of indirectly-driven, deuterium gas filled inertial confinement fusion (ICF) capsule implosions at convergence ratios of 10 to 15, using a new “enhanced emission” technique at the National Ignition Facility (NIF) [E. M. Campbell, R. Cauble, and B. A. Remington, AIP Conf. Proc. 429, 3 (1998)]. In these experiments, a high spatial resolution Kirkpatrick-Baez microscope was used to image the x-ray emission from the inner surface of a high-density-carbon (HDC) capsule’s shell. Use of a high atomic number dopant in the shell enabled time-resolved observations of shell perturbations penetrating into the hot spot. This allowed the effects of the perturbations and asymmetries on degrading neutron yield to be directly measured. In particular, mix induced radiation losses of ~400 J from the hot spot resulted in a neutron yield reduction of a factor of ~2. In a subsequent experiment with a significantly increased level of short-mode initial perturbations, shown through the enhanced imaging technique to be highly organized radially, the neutron yield dropped an additional factor of ~2.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; NA0001808
OSTI ID:
1491653
Alternate ID(s):
OSTI ID: 1435865
Report Number(s):
LLNL-JRNL-742398; 897098
Journal Information:
Physics of Plasmas, Vol. 25, Issue 5; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

References (84)

Progress towards ignition on the National Ignition Facility journal July 2013
Measurement of areal density modulation of laser-imploded shells through K -edge imaging journal September 2000
Evolution of Shell Nonuniformities near Peak Compression of a Spherical Implosion journal September 2001
First High-Convergence Cryogenic Implosion in a Near-Vacuum Hohlraum journal April 2015
Progress towards materials science above 1000 GPa (10 Mbar) on the NIF laser
  • Remington, B. A.; Park, H. -S.; Prisbrey, S. T.
  • DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading https://doi.org/10.1051/dymat/2009001
conference September 2009
Stabilization of high-compression, indirect-drive inertial confinement fusion implosions using a 4-shock adiabat-shaped drive journal August 2015
Towards a complete model of 3D line emission from ICF capsules: results from the first 3D simulations journal April 2000
On krypton-doped capsule implosion experiments at the National Ignition Facility journal July 2017
Engineering precision relocation capability into a large-cantilevered telescoping diagnostic for a Kirkpatrick Baez x-ray Optic conference September 2014
High-density carbon ablator experiments on the National Ignition Facility journal May 2014
X-ray and neutron sensitivity of imaging plates conference September 2013
Onset of Hydrodynamic Mix in High-Velocity, Highly Compressed Inertial Confinement Fusion Implosions journal August 2013
Time-resolved spectroscopic measurements of high density in Ar-filled microballoon implosions journal July 1989
Shell Mix in the Compressed Core of Spherical Implosions journal August 2002
Formation of Optical Images by X-Rays journal January 1948
Advances in x-ray framing cameras at the National Ignition Facility to improve quantitative precision in x-ray imaging journal February 2016
Measurement of electron temperature of imploded capsules at the National Ignition Facility journal October 2012
Effect of the mounting membrane on shape in inertial confinement fusion implosions journal February 2015
X-ray self-emission imaging used to diagnose 3-D nonuniformities in direct-drive ICF implosions journal September 2016
Mix and hydrodynamic instabilities on NIF journal June 2017
The near vacuum hohlraum campaign at the NIF: A new approach journal May 2016
Simulations and experiments of the growth of the “tent” perturbation in NIF ignition implosions journal May 2016
Prompt radiochemistry at the National Ignition Facility (invited) journal October 2008
Erratum: “Review of the National Ignition Campaign 2009-2012” [Phys. Plasmas 21, 020501 (2014)] journal December 2014
Development of the CD Symcap platform to study gas-shell mix in implosions at the National Ignition Facility journal September 2014
Rayleigh–Taylor instability in the deceleration phase of spherical implosion experiments journal June 2002
X-ray spectroscopic diagnostics and modeling of polar-drive implosion experiments on the National Ignition Facility journal June 2014
Controlled incorporation of mid-to-high Z transition metals in CVD diamond journal May 2010
A Kirkpatrick-Baez microscope for the National Ignition Facility journal November 2014
Compressed shell conditions extracted from spectroscopic analysis of Ti K-shell absorption spectra with evaluation of line self-emission journal August 2014
An in-flight radiography platform to measure hydrodynamic instability growth in inertial confinement fusion capsules at the National Ignition Facility journal July 2014
Spectroscopic determination of temperature and density spatial profiles and mix in indirect-drive implosion cores journal November 2007
High energy-density science on the National Ignition Facility
  • Campbell, E. M.; Cauble, R.; Remington, B. A.
  • The tenth American Physical Society topical conference on shock compression of condensed matter, AIP Conference Proceedings https://doi.org/10.1063/1.55630
conference January 1998
Mode 1 drive asymmetry in inertial confinement fusion implosions on the National Ignition Facility journal April 2014
Processing of spectrally resolved x-ray images of inertial confinement fusion implosion cores recorded with multimonochromatic x-ray imagers journal May 2011
First Measurements of Hydrodynamic Instability Growth in Indirectly Driven Implosions at Ignition-Relevant Conditions on the National Ignition Facility journal May 2014
Capsule physics comparison of National Ignition Facility implosion designs using plastic, high density carbon, and beryllium ablators journal March 2018
Differential ablator-fuel adiabat tuning in indirect-drive implosions journal March 2015
Symmetry control of an indirectly driven high-density-carbon implosion at high convergence and high velocity journal May 2017
Three-dimensional HYDRA simulations of National Ignition Facility targets journal May 2001
Calibration results for first NIF Kirkpatrick-Baez microscope conference September 2015
Diagnosing implosions at the national ignition facility with X-ray spectroscopy
  • Regan, S. P.; Epstein, R.; Hammel, B. A.
  • THE 17TH INTERNATIONAL CONFERENCE ON ATOMIC PROCESSES IN PLASMAS (ICAPIP), AIP Conference Proceedings https://doi.org/10.1063/1.4707854
conference January 2012
K ‐ and L ‐shell x‐ray spectroscopy of indirectly driven implosions (invited) journal October 1992
Hot-Spot Mix in Ignition-Scale Inertial Confinement Fusion Targets journal July 2013
Measurement of Hydrodynamic Growth near Peak Velocity in an Inertial Confinement Fusion Capsule Implosion using a Self-Radiography Technique journal July 2016
Shell trajectory measurements from direct-drive implosion experiments journal October 2012
Tent-induced perturbations on areal density of implosions at the National Ignition Facilitya) journal May 2015
Shock-Wave Exploration of the High-Pressure Phases of Carbon journal December 2008
Hydro-instability growth of perturbation seeds from alternate capsule-support strategies in indirect-drive implosions on National Ignition Facility journal October 2017
Improving ICF implosion performance with alternative capsule supports journal May 2017
Multispectral x-ray imaging with a pinhole array and a flat Bragg mirror journal July 2005
Instability growth seeded by oxygen in CH shells on the National Ignition Facility journal March 2015
Optical and multilayer design for the first Kirkpatrick-Baez optics for x-ray diagnostic at NIF conference September 2013
Melting temperature of diamond at ultrahigh pressure journal November 2009
Hydrodynamic instability growth of three-dimensional, “native-roughness” modulations in x-ray driven, spherical implosions at the National Ignition Facility journal July 2015
The National Ignition Facility modular Kirkpatrick-Baez microscope journal August 2016
The Physics of Inertial Fusion book January 2004
Diagnosis of Pusher-Fuel Mix in Indirectly Driven Nova Implosions journal October 1994
Direct asymmetry measurement of temperature and density spatial distributions in inertial confinement fusion plasmas from pinhole space-resolved spectra journal May 2014
Performance of High-Convergence, Layered DT Implosions with Extended-Duration Pulses at the National Ignition Facility journal November 2013
Measurements of core and pusher conditions in surrogate capsule implosions on the OMEGA laser system journal May 1998
Advances in NLTE modeling for integrated simulations journal January 2010
Laser Compression of Matter to Super-High Densities: Thermonuclear (CTR) Applications journal September 1972
Radiochemical determination of Inertial Confinement Fusion capsule compression at the National Ignition Facility journal June 2014
Diamond spheres for inertial confinement fusion journal September 2009
Diagnosing and controlling mix in National Ignition Facility implosion experiments journal May 2011
Gated x-ray detector for the National Ignition Facility journal October 2006
Symmetry control in subscale near-vacuum hohlraums journal May 2016
Systematic Fuel Cavity Asymmetries in Directly Driven Inertial Confinement Fusion Implosions journal March 2017
Radial structure of shell modulations near peak compression of spherical implosions journal March 2003
Instability of the interface of two gases accelerated by a shock wave journal January 1972
Hydrodynamic instability experiments with three-dimensional modulations at the National Ignition Facility journal January 2015
Hydrodynamic growth of shell modulations in the deceleration phase of spherical direct-drive implosions journal May 2003
Characterization of direct-drive-implosion core conditions on OMEGA with time-resolved Ar K -shell spectroscopy journal April 2002
The instability of liquid surfaces when accelerated in a direction perpendicular to their planes. I journal March 1950
Evaluation of the sensitivity and fading characteristics of an image plate system for x-ray diagnostics journal November 2008
Hydrodynamic instability growth and mix experiments at the National Ignition Facility journal May 2014
X-ray spectroscopic measurements of high densities and temperatures from indirectly driven inertial confinement fusion capsules journal March 1993
Effect of higher z dopants on implosion dynamics: X-ray spectroscopy journal May 2007
Taylor instability in shock acceleration of compressible fluids journal May 1960
Constraining fundamental plasma physics processes using doped capsule implosions journal May 2008
Diagnosis of pusher‐fuel mix in spherical implosions using x‐ray spectroscopy (invited) journal January 1995
Microchannel plate detectors journal June 1979
X-ray shadow imprint of hydrodynamic instabilities on the surface of inertial confinement fusion capsules by the fuel fill tube journal March 2017

Cited By (5)

An x-ray optic calibration facility for high energy density diagnostics journal October 2018
Development of new platforms for hydrodynamic instability and asymmetry measurements in deceleration phase of indirectly driven implosions on NIF journal August 2018
Using cylindrical implosions to investigate hydrodynamic instabilities in convergent geometry journal November 2019
Review of hydrodynamic instability experiments in inertially confined fusion implosions on National Ignition Facility journal October 2019
Progress of indirect drive inertial confinement fusion in the United States journal July 2019