Method for forming targets

Patent · Mon Jan 01 04:00:00 EST 1979

OSTI ID:863352

Woerner, Robert L ^[1]

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1. Livermore, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4154868
• OSTI ID: 863352
• Country of Publication: United States
• Language: English

Related Subjects

/427/118/376/
accomplished
beams
capability
cell
compact
concentric
concentric layers
contained
cryogenic
cryogenic material
cryogenic materials
cryoinduced
cryoinduced uniform
deposition
deuterium-tritium
dt
electrical
electrical heat
electron
electron beam
electron beams
etc
formed
forming
forming targets
freezing
freezing cell
frozen
frozen dt
frozen layer
heat
heat pulse
heating
hollow
hollow sphere
hollow spheres
hollow spherical
imploded
imploded targets
inertially
inertially imploded
inner
inner surface
innermost
intermediate
involved
lasers
layer
layers
located
material
materials
materials contained
method
mixtures
multiple
multiple concentric
multiple shell
non-isothermal
outer
producing
providing
pulse
quickly
quickly refreezing
refreezing
refreezing cryogenic
restricted
shell
shells
spheres
spherical
surface
targets
uniform
uniform deposit
uniform deposition
uniform layer
vaporizing
whereafter