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Title: Thin Shell, High Velocity Inertial Confinement Fusion Implosions on the National Ignition Facility

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

Experiments have recently been conducted at the National Ignition Facility utilizing inertial confinement fusion capsule ablators that are 175 and 165 μm in thickness, 10% and 15% thinner, respectively, than the nominal thickness capsule used throughout the high foot and most of the National Ignition Campaign. These three-shock, high-adiabat, high-foot implosions have demonstrated good performance, with higher velocity and better symmetry control at lower laser powers and energies than their nominal thickness ablator counterparts. Little to no hydrodynamic mix into the DT hot spot has been observed despite the higher velocities and reduced depth for possible instability feedthrough. Earlier results have shown good repeatability, with up to 1/2 the neutron yield coming from α-particle self-heating.

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:
NA0001857; AC52-07NA27344
OSTI ID:
1177961
Alternate ID(s):
OSTI ID: 1179335
Journal Information:
Physical Review Letters, Vol. 114, Issue 14; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

References (31)

The physics basis for ignition using indirect-drive targets on the National Ignition Facility journal February 2004
The National Ignition Facility: Ushering in a new age for high energy density science journal April 2009
Progress towards ignition on the National Ignition Facility journal July 2013
Fuel gain exceeding unity in an inertially confined fusion implosion journal February 2014
High-Adiabat High-Foot Inertial Confinement Fusion Implosion Experiments on the National Ignition Facility journal February 2014
Design of a High-Foot High-Adiabat ICF Capsule for the National Ignition Facility journal February 2014
Implosion dynamics measurements at the National Ignition Facility journal December 2012
Convergent ablator performance measurements journal October 2010
X-ray driven implosions at ignition relevant velocities on the National Ignition Facility journal May 2013
Development of the CD Symcap platform to study gas-shell mix in implosions at the National Ignition Facility journal September 2014
Point design targets, specifications, and requirements for the 2010 ignition campaign on the National Ignition Facility journal May 2011
The high-foot implosion campaign on the National Ignition Facility journal May 2014
2D X-Ray Radiography of Imploding Capsules at the National Ignition Facility journal May 2014
Symmetry tuning via controlled crossed-beam energy transfer on the National Ignition Facility journal May 2010
Development of nuclear diagnostics for the National Ignition Facility (invited) journal October 2006
Neutron activation diagnostics at the National Ignition Facility (invited) journal October 2012
Neutron spectrometry—An essential tool for diagnosing implosions at the National Ignition Facility (invited) journal October 2012
Diagnosing implosion performance at the National Ignition Facility (NIF) by means of neutron spectrometry journal March 2013
Assembly of High-Areal-Density Deuterium-Tritium Fuel from Indirectly Driven Cryogenic Implosions journal May 2012
Thermonuclear ignition in inertial confinement fusion and comparison with magnetic confinement journal May 2010
The neutron imaging diagnostic at NIF (invited) journal October 2012
Neutron source reconstruction from pinhole imaging at National Ignition Facility journal February 2014
First Measurements of Hydrodynamic Instability Growth in Indirectly Driven Implosions at Ignition-Relevant Conditions on the National Ignition Facility journal May 2014
Reduced instability growth with high-adiabat high-foot implosions at the National Ignition Facility journal July 2014
An in-flight radiography platform to measure hydrodynamic instability growth in inertial confinement fusion capsules at the National Ignition Facility journal July 2014
A study of ALE simulations of Rayleigh–Taylor instability journal March 2001
Onset of Hydrodynamic Mix in High-Velocity, Highly Compressed Inertial Confinement Fusion Implosions journal August 2013
The velocity campaign for ignition on NIF journal May 2012
Capsule implosion optimization during the indirect-drive National Ignition Campaign journal May 2011
Three-dimensional HYDRA simulations of National Ignition Facility targets journal May 2001
Improved performance of direct-drive inertial confinement fusion target designs with adiabat shaping using an intensity picket journal May 2003

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