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Title: DESTRUCTION OF NEUTRAL PARTICLES IN A DEVICE FOR PRODUCING A HIGH DENSITY PLASMA

Abstract

A method and apparatus are described for burning out neutral particles in an evacuated region and within a strong magnetic field. The method comprises injecting energetic molecular ions into the region perpendicular to the magnetic field and into the path of a dissociating, energetic arc discharge, the atomic ions formed in the dissociating process being trapped by the magnetic field, and then increasing the value of the trapped atomic ion current to such a value that the neutral particles are destroyed faster than they are formed, thereby causing a dense, energetic plasma to be built up and sustained by the magnetic field. (AEC)

Inventors:
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4786420
Patent Number(s):
US 3032490
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-16-017218
NSA Number:
NSA-16-017218
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Country of Publication:
United States
Language:
English
Subject:
PHYSICS; ATOMS; BURNOUT; CONFINEMENT; CURRENTS; DECOMPOSITION; DENSITY; ELECTRIC ARCS; ELECTRIC DISCHARGES; ENERGY RANGE; GASES; INJECTION; ION BEAMS; IONIZATION; KEV RANGE; MAGNETIC FIELDS; MAGNETIC MIRRORS; MOLECULES; PLANNING; PLASMA; THERMONUCLEAR DEVICES; TRAPS

Citation Formats

Simon, A. DESTRUCTION OF NEUTRAL PARTICLES IN A DEVICE FOR PRODUCING A HIGH DENSITY PLASMA. United States: N. p., 1962. Web.
Simon, A. DESTRUCTION OF NEUTRAL PARTICLES IN A DEVICE FOR PRODUCING A HIGH DENSITY PLASMA. United States.
Simon, A. Tue . "DESTRUCTION OF NEUTRAL PARTICLES IN A DEVICE FOR PRODUCING A HIGH DENSITY PLASMA". United States. doi:.
@article{osti_4786420,
title = {DESTRUCTION OF NEUTRAL PARTICLES IN A DEVICE FOR PRODUCING A HIGH DENSITY PLASMA},
author = {Simon, A.},
abstractNote = {A method and apparatus are described for burning out neutral particles in an evacuated region and within a strong magnetic field. The method comprises injecting energetic molecular ions into the region perpendicular to the magnetic field and into the path of a dissociating, energetic arc discharge, the atomic ions formed in the dissociating process being trapped by the magnetic field, and then increasing the value of the trapped atomic ion current to such a value that the neutral particles are destroyed faster than they are formed, thereby causing a dense, energetic plasma to be built up and sustained by the magnetic field. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 01 00:00:00 EDT 1962},
month = {Tue May 01 00:00:00 EDT 1962}
}
  • The invention relates to the production of plasma. The process according to the invention comprises the steps of: maintaining a gaseous medium in an enclosure at a pressure in the range of 10/sup -5/ to 10/sup -1/ Torr; exciting this gaseous medium in the enclosure by means of UHF waves in the range of one to ten gigahertz, producing a plasma; and maintaining this plasma in the enclosure by means of a magnetic confinement shell comprising many elongated magnetic elements arranged parallel to each other inside the enclosure near the respective interior surfaces, the faces of the magnetic elements whichmore » face the interior of the enclosure having alternating polarities. It is more particularly applicable to the microelectronics industry.« less
  • A high beta plasma is produced in a plasma producing device of toroidal configuration by ohmic heating and auxiliary heating. The plasma pressure is continuously monitored and used in a control system to program the current in the poloidal field windings. Throughout the heating process, magnetic flux is conserved inside the plasma and the distortion of the flux surfaces drives a current in the plasma. As a consequence, the total current increases and the poloidal field windings are driven with an equal and opposing increasing current. The spatial distribution of the current in the poloidal field windings is determined bymore » the plasma pressure. Plasma equilibrium is maintained thereby, and high temperature, high beta operation results.« less
  • A high beta plasma is produced in a plasma producing device of toroidal configuration by ohmic heating and auxiliary heating. The plasma pressure is continuously monitored and used in a control system to program the current in the poloidal field windings. Throughout the heating process, magnetic flux is conserved inside the plasma and the distortion of the flux surfaces drives a current in the plasma. As a consequence, the total current increases and the poloidal field windings are driven with an equal and opposing increasing current. The spatial distribution of the current in the poloidal field windings is determined bymore » the plasma pressure. Plasma equilibrium is maintained thereby, and high temperature, high beta operation results.« less