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Title: Dynamic response of materials on sub-nanosecond time scales, and beryllium properties for inertial confinement fusion

Abstract

During the past few years, substantial progress has been made in developing experimental techniques capable of investigating the response of materials to dynamic loading on nanosecond time scales and shorter, with multiple diagnostics probing different aspects of the behavior. these relatively short time scales are scientifically interesting because plastic flow and phase changes in common materials with simple crystal structures--such as iron--may be suppressed, allowing unusual states to be induced and the dynamics of plasticity and polymorphism to be explored. Loading by laser ablation can be particularly convenient. The TRIDENT laser has been used to impart shocks and isentropic compression waves from {approx}1 to 200GPa in a range of elements and alloys, with diagnostics including surface velocimetry (line-imaging VISAR), surface displacement (framed area imaging), x-ray diffraction (single crystal and polycrystal), ellipsometry, and Raman spectroscopy. A major motivation has been the study of the properties of beryllium under conditions relevant to the fuel capsule in inertial confinement fusion: magnetically-driven shock and isentropic compression shots at Z were used to investigate the equation of state and shock melting characteristics, complemented by laser ablation experiments to investigate plasticity and heterogeneous response. These results will help to constrain acceptable tolerances on manufacturing, and possiblemore » loading paths, for inertial fusion ignition experiments at the National Ignition Facility. Laser-based techniques are being developed further for future material dynamics experiments, where it should be possible to obtain high quality data on strength and phase changes up to at least 1TPa.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
940158
Report Number(s):
UCRL-JRNL-208779
Journal ID: ISSN 1070-664X; PHPAEN; TRN: US0806936
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 12; Journal Issue: 5; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ABLATION; ALLOYS; BERYLLIUM; COMPRESSION; ELLIPSOMETRY; IGNITION; INERTIAL CONFINEMENT; LASERS; MANUFACTURING; MELTING; PLASTICITY; PLASTICS; RAMAN SPECTROSCOPY; US NATIONAL IGNITION FACILITY; X-RAY DIFFRACTION

Citation Formats

Swift, D C, Tierney, T E, Luo, S N, Paisley, D L, Kyrala, G A, Hauer, A, Greenfield, S R, Koskelo, A C, McClellan, K J, Lorenzana, H E, Knudson, M D, Peralta, P P, and Loomis, E. Dynamic response of materials on sub-nanosecond time scales, and beryllium properties for inertial confinement fusion. United States: N. p., 2004. Web.
Swift, D C, Tierney, T E, Luo, S N, Paisley, D L, Kyrala, G A, Hauer, A, Greenfield, S R, Koskelo, A C, McClellan, K J, Lorenzana, H E, Knudson, M D, Peralta, P P, & Loomis, E. Dynamic response of materials on sub-nanosecond time scales, and beryllium properties for inertial confinement fusion. United States.
Swift, D C, Tierney, T E, Luo, S N, Paisley, D L, Kyrala, G A, Hauer, A, Greenfield, S R, Koskelo, A C, McClellan, K J, Lorenzana, H E, Knudson, M D, Peralta, P P, and Loomis, E. Thu . "Dynamic response of materials on sub-nanosecond time scales, and beryllium properties for inertial confinement fusion". United States. https://www.osti.gov/servlets/purl/940158.
@article{osti_940158,
title = {Dynamic response of materials on sub-nanosecond time scales, and beryllium properties for inertial confinement fusion},
author = {Swift, D C and Tierney, T E and Luo, S N and Paisley, D L and Kyrala, G A and Hauer, A and Greenfield, S R and Koskelo, A C and McClellan, K J and Lorenzana, H E and Knudson, M D and Peralta, P P and Loomis, E},
abstractNote = {During the past few years, substantial progress has been made in developing experimental techniques capable of investigating the response of materials to dynamic loading on nanosecond time scales and shorter, with multiple diagnostics probing different aspects of the behavior. these relatively short time scales are scientifically interesting because plastic flow and phase changes in common materials with simple crystal structures--such as iron--may be suppressed, allowing unusual states to be induced and the dynamics of plasticity and polymorphism to be explored. Loading by laser ablation can be particularly convenient. The TRIDENT laser has been used to impart shocks and isentropic compression waves from {approx}1 to 200GPa in a range of elements and alloys, with diagnostics including surface velocimetry (line-imaging VISAR), surface displacement (framed area imaging), x-ray diffraction (single crystal and polycrystal), ellipsometry, and Raman spectroscopy. A major motivation has been the study of the properties of beryllium under conditions relevant to the fuel capsule in inertial confinement fusion: magnetically-driven shock and isentropic compression shots at Z were used to investigate the equation of state and shock melting characteristics, complemented by laser ablation experiments to investigate plasticity and heterogeneous response. These results will help to constrain acceptable tolerances on manufacturing, and possible loading paths, for inertial fusion ignition experiments at the National Ignition Facility. Laser-based techniques are being developed further for future material dynamics experiments, where it should be possible to obtain high quality data on strength and phase changes up to at least 1TPa.},
doi = {},
url = {https://www.osti.gov/biblio/940158}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 12,
place = {United States},
year = {2004},
month = {12}
}