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Title: System for the production of plasma

Abstract

The present invention provides a system for the production of a plasma by concentrating and focusing a laser beam on the plasma-forming material with a lightfocusing member which comprises a parabolic axicon in conjunction with a coaxial conical mirror. The apex of the conical mirror faces away from the focus of the parabolic axicon such that the conical mirror serves to produce a virtual line source along the axis of the cone. Consequently, irradiation from a laser parallel to the axis toward the apex of the conical mirror will be concentrated at the focus of the parabolic axicon, impinging upon the plasma-forming material there introduced to produce a plasma. The system is adaptable to irradiation of a target pellet introduced at the focus of the parabolic axicon and offers an advantage in that the target pellet can be irradiated with a high degree of radial and spherical symmetry.

Inventors:
 [1]
  1. Ann Arbor, MI
Issue Date:
OSTI Identifier:
863198
Patent Number(s):
4118274
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G21 - NUCLEAR PHYSICS G21B - FUSION REACTORS
DOE Contract Number:  
E(11-1)-2031
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
production; plasma; provides; concentrating; focusing; laser; beam; plasma-forming; material; lightfocusing; comprises; parabolic; axicon; conjunction; coaxial; conical; mirror; apex; focus; serves; produce; virtual; line; source; axis; cone; consequently; irradiation; parallel; concentrated; impinging; introduced; adaptable; target; pellet; offers; advantage; irradiated; degree; radial; spherical; symmetry; laser beam; target pellet; forming material; line source; /376/

Citation Formats

Bakken, George S. System for the production of plasma. United States: N. p., 1978. Web.
Bakken, George S. System for the production of plasma. United States.
Bakken, George S. Sun . "System for the production of plasma". United States. https://www.osti.gov/servlets/purl/863198.
@article{osti_863198,
title = {System for the production of plasma},
author = {Bakken, George S},
abstractNote = {The present invention provides a system for the production of a plasma by concentrating and focusing a laser beam on the plasma-forming material with a lightfocusing member which comprises a parabolic axicon in conjunction with a coaxial conical mirror. The apex of the conical mirror faces away from the focus of the parabolic axicon such that the conical mirror serves to produce a virtual line source along the axis of the cone. Consequently, irradiation from a laser parallel to the axis toward the apex of the conical mirror will be concentrated at the focus of the parabolic axicon, impinging upon the plasma-forming material there introduced to produce a plasma. The system is adaptable to irradiation of a target pellet introduced at the focus of the parabolic axicon and offers an advantage in that the target pellet can be irradiated with a high degree of radial and spherical symmetry.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

Patent:

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