Method of making foam-encapsulated laser targets
Abstract
Foam-encapsulated laser fusion targets are fabricated by suspending fusion fuel filled shells in a solution of cellulose acetate, extruding the suspension through a small orifice into a bath of ice water, soaking the thus formed shell containing cellulose acetate gel in the water to extract impurities, freezing the gel, and thereafter freeze-drying wherein water and solvents sublime and the gel structure solidifies into a low-density microcellular foam containing one or more encapsulated fuel-filled shells. The thus formed material is thereafter cut and mounted on a support to provide laser fusion targets containing a fuel-filled shell surrounded by foam having a thickness of 10 to 60 .mu.m, a cell size of less than 2 .mu.m, and density of 0.08 to 0.6.times.10.sup.3 kg/m.sup.3. Various configured foam-encapsulated targets capable of being made by the encapsulation method are illustrated.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 862826
- Patent Number(s):
- 4021280
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; foam-encapsulated; laser; targets; fusion; fabricated; suspending; fuel; filled; shells; solution; cellulose; acetate; extruding; suspension; orifice; bath; ice; water; soaking; formed; shell; containing; extract; impurities; freezing; thereafter; freeze-drying; solvents; sublime; structure; solidifies; low-density; microcellular; foam; encapsulated; fuel-filled; material; cut; mounted; support; provide; surrounded; thickness; 10; 60; cell; size; density; 08; times; kg; various; configured; capable; encapsulation; illustrated; low-density microcellular; density microcellular; fusion targets; cell size; laser fusion; cellulose acetate; laser targets; microcellular foam; fusion target; shell containing; solvents sublime; structure solidifies; fusion fuel; laser target; foam containing; foam-encapsulated laser; ice water; encapsulation method; encapsulated fuel; cellular foam; /156/264/376/
Citation Formats
Rinde, James A, and Fulton, Fred J. Method of making foam-encapsulated laser targets. United States: N. p., 1977.
Web.
Rinde, James A, & Fulton, Fred J. Method of making foam-encapsulated laser targets. United States.
Rinde, James A, and Fulton, Fred J. Sat .
"Method of making foam-encapsulated laser targets". United States. https://www.osti.gov/servlets/purl/862826.
@article{osti_862826,
title = {Method of making foam-encapsulated laser targets},
author = {Rinde, James A and Fulton, Fred J},
abstractNote = {Foam-encapsulated laser fusion targets are fabricated by suspending fusion fuel filled shells in a solution of cellulose acetate, extruding the suspension through a small orifice into a bath of ice water, soaking the thus formed shell containing cellulose acetate gel in the water to extract impurities, freezing the gel, and thereafter freeze-drying wherein water and solvents sublime and the gel structure solidifies into a low-density microcellular foam containing one or more encapsulated fuel-filled shells. The thus formed material is thereafter cut and mounted on a support to provide laser fusion targets containing a fuel-filled shell surrounded by foam having a thickness of 10 to 60 .mu.m, a cell size of less than 2 .mu.m, and density of 0.08 to 0.6.times.10.sup.3 kg/m.sup.3. Various configured foam-encapsulated targets capable of being made by the encapsulation method are illustrated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1977},
month = {Sat Jan 01 00:00:00 EST 1977}
}