NDLI: Molecular dynamics investigations of the ablator/fuel interface during early stages of inertial confinement fusion

Content Provider	IEEE Xplore Digital Library
Author	Stanton, Liam G. Glosli, James N. Murillo, Michael S.
Copyright Year	2014
Description	Author affiliation: Lawrence Livermore National Laboratory, CA 94550 USA (Stanton, Liam G.; Glosli, James N.) \|\| Los Alamos National Laboratory, NM 87545 USA (Murillo, Michael S.)
Abstract	At the National Ignition Facility, high-powered laser beams are focused into a hohlraum, which in turn produces x-rays that heat and compress a small spherical target to generate fusion reactions. A critical issue in achieving this is the understanding of the mix at the ablator/fuel interface. Mixing occurs at various length scales, ranging from atomic inter-species diffusion to hydrodynamic instabilities. Because the ablator/fuel interface is preheated by energy from the incoming shock, it is important to understand the dynamics of the interface before the shock arrives. The interface is in the warm dense matter phase with a deuterium-tritium fuel mixture on one side and a plastic (H, C and O) mixture on the other. We would like to understand various aspects of the evolution of this warm dense mixture, including the state of the interface when the main shock arrives, the role of electric field generation at the interface, and the character and time scales for diffusive-like mixing. We present a molecular dynamics approach to model these processes, in which the ions are treated as classical point particles. Because we must reach extremely large length (many microns) and time scales (many picoseconds), we have also developed a simplified electronic structure model, which includes time- and space-dependent ionization levels, external heating and electron-ion energy exchange. Simulation results are presented and compared with other models and experiments.
Starting Page	1
Ending Page	1
File Size	105065
Page Count	1
File Format	PDF
ISBN	9781479927111
e-ISBN	9781479927135
DOI	10.1109/PLASMA.2014.7012469
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fuels Laboratories Electric shock Laser beams Ignition Laser fusion X-ray lasers
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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