Apparatus for forming targets

Patent · Tue Jan 01 00:00:00 EST 1980

OSTI ID:863645

Woerner, Robert L ^[1]

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1. Livermore, CA

Apparatus and 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 (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4221186
• OSTI ID: 863645
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
forming
targets
method
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
/118/