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Title: Hollow foam microshells for liquid-layered cryogenic inertial confinement fusion targets

Abstract

Future U.S. inertial confinement fusion (ICF) targets will use capsules, 1--2 mm in diameter, with uniform 100 {mu}m thick, cryogenic fuel layers. Research is currently underway to identify optimal methods for producing these thick, uniform layers. One method is to use a spherical polymer foam layer within a full density polymer overcoat to support the fuel. Targets of this type, 0.4--0.8 mm in diameter, with 10--30 {mu}m walls, have been developed by the Institute of Laser Engineering at Osaka University, Japan. Reported here are the results obtained from work to extend the method to the future ICF target design. Overcoated foam shells of the proper dimensions were produced, but their optical properties precluded the use of current diagnostics to determine the amount and uniformity of the fuel fill. Briefly outlined are options for improving the optical properties. {copyright} {ital 1995} {ital American} {ital Vacuum} {ital Society}

Authors:
 [1]; ; ; ; ;  [2]
  1. W. J. Schafer Associates, Livermore, California 94550 (United States)
  2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
250559
DOE Contract Number:  
AC03-91SF18601; W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Journal of Vacuum Science and Technology, A
Additional Journal Information:
Journal Volume: 13; Journal Issue: 5; Other Information: PBD: Sep 1995
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; LASER TARGETS; FABRICATION; ENCAPSULATION; ICF DEVICES; OPTICAL PROPERTIES; PLASTIC FOAMS

Citation Formats

Schroen-Carey, D, Overturf, III, G E, Reibold, R, Buckley, S R, Letts, S A, and Cook, R. Hollow foam microshells for liquid-layered cryogenic inertial confinement fusion targets. United States: N. p., 1995. Web. doi:10.1116/1.579450.
Schroen-Carey, D, Overturf, III, G E, Reibold, R, Buckley, S R, Letts, S A, & Cook, R. Hollow foam microshells for liquid-layered cryogenic inertial confinement fusion targets. United States. https://doi.org/10.1116/1.579450
Schroen-Carey, D, Overturf, III, G E, Reibold, R, Buckley, S R, Letts, S A, and Cook, R. Fri . "Hollow foam microshells for liquid-layered cryogenic inertial confinement fusion targets". United States. https://doi.org/10.1116/1.579450.
@article{osti_250559,
title = {Hollow foam microshells for liquid-layered cryogenic inertial confinement fusion targets},
author = {Schroen-Carey, D and Overturf, III, G E and Reibold, R and Buckley, S R and Letts, S A and Cook, R},
abstractNote = {Future U.S. inertial confinement fusion (ICF) targets will use capsules, 1--2 mm in diameter, with uniform 100 {mu}m thick, cryogenic fuel layers. Research is currently underway to identify optimal methods for producing these thick, uniform layers. One method is to use a spherical polymer foam layer within a full density polymer overcoat to support the fuel. Targets of this type, 0.4--0.8 mm in diameter, with 10--30 {mu}m walls, have been developed by the Institute of Laser Engineering at Osaka University, Japan. Reported here are the results obtained from work to extend the method to the future ICF target design. Overcoated foam shells of the proper dimensions were produced, but their optical properties precluded the use of current diagnostics to determine the amount and uniformity of the fuel fill. Briefly outlined are options for improving the optical properties. {copyright} {ital 1995} {ital American} {ital Vacuum} {ital Society}},
doi = {10.1116/1.579450},
url = {https://www.osti.gov/biblio/250559}, journal = {Journal of Vacuum Science and Technology, A},
number = 5,
volume = 13,
place = {United States},
year = {1995},
month = {9}
}