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Title: Method for forming targets

Abstract

Method for cryoinduced uniform deposition of cryogenic materials, such as deuterium-tritium (DT) mixtures, on the inner surface of hollow spherical members, such as inertially imploded targets. By vaporizing and quickly refreezing cryogenic materials contained within a hollow spherical member, a uniform layer of the materials is formed on the inner surface of the spherical member. Heating of the cryogenic material, located within a non-isothermal compact freezing cell, is accomplished by an electrical heat pulse, whereafter the material is quickly frozen forming a uniform layer on the inner surface of the spherical member. The method is not restricted to producing a frozen layer on only the inner surface of the innermost hollow member, but where multiple concentric hollow spheres are involved, such as in multiple shell targets for lasers, electron beams, etc., layers of cryogenic material may also be formed on the inner surface of intermediate or outer spherical members, thus providing the capability of forming targets having multiple concentric layers or shells of frozen DT.

Inventors:
 [1]
  1. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
863352
Patent Number(s):
4154868
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; forming; targets; cryoinduced; uniform; deposition; cryogenic; materials; deuterium-tritium; dt; mixtures; inner; surface; hollow; spherical; inertially; imploded; vaporizing; quickly; refreezing; contained; layer; formed; heating; material; located; non-isothermal; compact; freezing; cell; accomplished; electrical; heat; pulse; whereafter; frozen; restricted; producing; innermost; multiple; concentric; spheres; involved; shell; lasers; electron; beams; etc; layers; intermediate; outer; providing; capability; shells; quickly refreezing; frozen layer; multiple concentric; heat pulse; materials contained; hollow spheres; electron beam; inner surface; electron beams; hollow spherical; cryogenic materials; cryogenic material; uniform layer; multiple shell; refreezing cryogenic; forming targets; concentric layers; uniform deposition; electrical heat; imploded targets; inertially imploded; freezing cell; frozen dt; uniform deposit; hollow sphere; cryoinduced uniform; /427/118/376/

Citation Formats

Woerner, Robert L. Method for forming targets. United States: N. p., 1979. Web.
Woerner, Robert L. Method for forming targets. United States.
Woerner, Robert L. Mon . "Method for forming targets". United States. https://www.osti.gov/servlets/purl/863352.
@article{osti_863352,
title = {Method for forming targets},
author = {Woerner, Robert L.},
abstractNote = {Method for cryoinduced uniform deposition of cryogenic materials, such as deuterium-tritium (DT) mixtures, on the inner surface of hollow spherical members, such as inertially imploded targets. By vaporizing and quickly refreezing cryogenic materials contained within a hollow spherical member, a uniform layer of the materials is formed on the inner surface of the spherical member. Heating of the cryogenic material, located within a non-isothermal compact freezing cell, is accomplished by an electrical heat pulse, whereafter the material is quickly frozen forming a uniform layer on the inner surface of the spherical member. The method is not restricted to producing a frozen layer on only the inner surface of the innermost hollow member, but where multiple concentric hollow spheres are involved, such as in multiple shell targets for lasers, electron beams, etc., layers of cryogenic material may also be formed on the inner surface of intermediate or outer spherical members, thus providing the capability of forming targets having multiple concentric layers or shells of frozen DT.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

Patent:

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