IP Library Granted Patent US 9,905,318
Granted Patent B2
US 9,905,318 · App. 14/261,991 · Granted Feb 27, 2018

Hybrid indirect-drive/direct-drive target for inertial confinement fusion

Inventor: Lindsay John Perkins (Pleasanton, CA)
Assignee: Lawrence Livermore National Security, LLC
G21B1/19G21B1/23
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Quick Facts
Patent No.
US 9,905,318
App. No.
14/261,991
Granted
Feb 27, 2018
Kind
B2
Abstract

A hybrid indirect-drive/direct drive for inertial confinement fusion utilizing laser beams from a first direction and laser beams from a second direction including a central fusion fuel component; a first portion of a shell surrounding said central fusion fuel component, said first portion of a shell having a first thickness; a second portion of a shell surrounding said fusion fuel component, said second portion of a shell having a second thickness that is greater than said thickness of said first portion of a shell; and a hohlraum containing at least a portion of said fusion fuel component and at least a portion of said first portion of a shell; wherein said hohlraum is in a position relative to said first laser beam and to receive said first laser beam and produce X-rays that are directed to said first portion of a shell and said fusion fuel component; and wherein said fusion fuel component and said second portion of a shell are in a position relative to said second laser beam such that said second portion of a shell and said fusion fuel component receive said second laser beam.

Claims (32)

1. A hybrid indirect-drive/direct drive apparatus for inertial confinement fusion, comprising:

a central fusion fuel component;

a first portion of a shell surrounding said central fusion fuel component, said first portion of a shell having a first thickness;

a second portion of a shell surrounding said fusion fuel component, said second portion of a shell having a second thickness that is greater than said thickness of said first portion of a shell; and

a hohlraum containing at least a portion of said fusion fuel component and at least a portion of said first portion of a shell,

said hohlraum adapted to produce X-rays that are directed to said first portion of a shell and said fusion fuel component; and

wherein said at least a portion of said fusion fuel component and said second portion of a shell are not contained in said hohlraum.

2. The hybrid indirect-drive/direct drive apparatus for inertial confinement fusion of claim 1 further comprising a fill tube extending through said first portion of a shell and said second portion of a shell to said fusion fuel component.

3. A hybrid indirect-drive/direct drive apparatus for inertial confinement fusion, comprising:

a central fuel unit;

a first portion of a shell surrounding said central fuel unit, said first portion of a shell having a first thickness;

a second portion of a shell surrounding said central fuel unit, said second portion of a shell having a second thickness that is greater than said thickness of said first portion of a shell; and

a hohlraum containing at least a portion of said central fuel unit and at least a portion of said first portion of a shell,

said hohlraum adapted to produce X-rays that are directed to said first portion of a shell; and

wherein said at least a portion of said central fuel unit and said second portion of a shell are not contained in said hohlraum.

4. The hybrid indirect-drive/direct drive apparatus for inertial confinement fusion of claim 3 further comprising a fill tube extending through said first portion of a shell and said second portion of a shell to said central fuel unit.

5. A hybrid indirect-drive/direct drive apparatus for inertial confinement fusion, comprising:

a central fuel unit;

a shell surrounding said central fuel unit, said shell having a first portion partially surrounding said central fuel unit and a second portion partially surrounding said central fuel unit;

wherein said first portion has a first thickness and said second portion has a second thickness that is greater than said first shell thickness; and

a hohlraum containing at least a portion of said first portion of said shell having a first thickness,

said hohlraum adapted to produce X-rays that are directed to said first portion of said shell having a first thickness; and

wherein said at least a portion of said central fuel unit and said second portion of said shell having a second thickness that is greater than said first shell thickness are not contained in said hohlraum.

6. The apparatus for inertial confinement fusion utilizing laser beams from a first direction and laser beams from a second direction of claim 5 further comprising a fill tube extending through said shell to said central fuel unit.

7. A hybrid indirect-drive/direct drive apparatus for inertial confinement fusion, comprising:

a central fuel unit;

a first portion of a shell surrounding said central fuel unit, said first portion of a shell having a first thickness;

a second portion of a shell surrounding said central fuel unit, said second portion of a shell having a second thickness that is greater than said thickness of said first portion of a shell, said second portion of a shell comprising fuel; and

a gold hohlraum containing at least a portion of said central fuel unit and at least a portion of said first portion of a shell,

said gold hohlraum adapted to produce X-rays that are directed to said first portion of a shell; and

wherein said at least a portion of said central fuel unit and said second portion of a shell are not contained in said gold hohlraum.

8. The hybrid indirect-drive/direct drive method for inertial confinement fusion of claim 7 wherein said second portion of a shell comprising fuel is solid deuterium-tritium.

Assignments (2)
CONFIRMATORY LICENSE Recorded Dec 18, 2014
From: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 034536/0825 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 16, 2014
From: PERKINS, LINDSAY JOHN
To: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
Reel/Frame 032911/0439 →
Continuity (2)
Provisional Application 61820503 · May 7, 2013
Related Publication 20140334585A1 · Nov 13, 2014