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Title: Cryogenic target formation using cold gas jets

A method and apparatus using cold gas jets for producing a substantially uniform layer of cryogenic materials on the inner surface of hollow spherical members having one or more layers, 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 an inner surface of the spherical member. Basically the method involves directing cold gas jets onto a spherical member having one or more layers or shells and containing the cryogenic material, such as a deuterium-tritium (DT) mixture, to freeze the contained material, momentarily heating the spherical member so as to vaporize the contained material, and quickly refreezing the thus vaporized material forming a uniform layer of cryogenic material on an inner surface of the spherical member.
Authors:
 [1]
  1. (Livermore, CA)
Publication Date:
OSTI Identifier:
863842
Report Number(s):
US 4258075
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Country of Publication:
United States
Language:
English
Subject:
cryogenic; target; formation; cold; gas; jets; method; apparatus; cold; gas; jets; producing; substantially; uniform; layer; cryogenic; materials; inner; surface; hollow; spherical; layers; inertially; imploded; targets; vaporizing; quickly; refreezing; cryogenic; materials; contained; hollow; spherical; uniform; layer; materials; formed; inner; surface; spherical; basically; method; involves; directing; cold; gas; jets; spherical; layers; shells; containing; cryogenic; material; deuterium-tritium; dt; mixture; freeze; contained; material; momentarily; heating; spherical; vaporize; contained; material; quickly; refreezing; vaporized; material; forming; uniform; layer; cryogenic; material; inner; surface; spherical; quickly refreezing; quickly refreezing; involves directing; materials contained; gas jet; gas jet; gas jet; method involves; inner surface; inner surface; inner surface; substantially uniform; hollow spherical; hollow spherical; gas jets; gas jets; gas jets; cold gas; cold gas; cold gas; cryogenic materials; cryogenic materials; cryogenic material; cryogenic material; cryogenic material; cryogenic material; uniform layer; uniform layer; uniform layer; material forming; vaporized material; refreezing cryogenic; imploded targets; inertially imploded; method involve; target formation; cryogenic target /427/376/