High efficiency plasma creation system and method
AssigneeN.T. Tao Ltd.
InventorsDoron Weinfeld, Boaz Weinfeld, Oded Gour Lavie
Life of this patent
Estimating the term…
Abstract
A chamber cross-sectional multi-stage plasma arrangement characterized by escalating charge movement towards chamber center axis through one or more escalation stages contributing to the heating of the plasma, the centering of the plasma on the chamber axis, and creating rotation of the plasma therein. Rotation of the plasma around its axis induces a self-generated magnetic field, which in turn increases plasma stability and confinement. Some of the said stages of the multi-stage arrangement may be created by physical elements and components while others may be induced or generated by externally applying magnetic and/or electric fields or their combinations and/or by injection of electrons, ions or other plasma.
Claims16
A method for stably confining a plasma in a cylindrical chamber comprising the steps of:
- injecting a gas into the cylindrical chamber;
- applying a magnetic field about a portion of the cylindrical chamber;
- applying an electric potential between a first anode and at least one cathode to create a radial electric field within the cylindrical chamber, wherein the first anode is generally radially arranged around a central axis of the cylindrical chamber and in proximity to a wall of the cylindrical chamber, and wherein the at least one cathode is located on the central axis of the cylindrical chamber and at a distal end of the cylindrical chamber, wherein a second anode comprising a cylindrical metallic mesh grid is generally radially arranged around the central axis of the cylindrical chamber between the first anode and the central axis of the cylindrical chamber;
- and
- injecting electrons into the chamber from the at least one cathode to create a virtual cathode along the central axis of the cylindrical chamber;
- wherein, the magnetic field and the radial electrical field accelerate ion movement toward the central axis of the cylindrical chamber to facilitate ion collisions, whereby an increase of ion movement towards the central axis of the cylindrical chamber substantially contributes to an ion heating and to a rotation of the plasma therein, thereby increasing a stability and a confinement of the plasma.
A system for stably confining a plasma, comprising:
- a. a cylindrical chamber;
- b. a first anode in proximity of a wall of the cylindrical chamber;
- c. at least one cathode at a distal end of the cylindrical chamber and at a central axis of the cylindrical chamber;
- d. a means for generating a magnetic field in the cylindrical chamber;
- e. capacitor banks dischargeable into a chamber volume;
- f. a pre-heating electric power supply coupled with the at least one cathode in the cylindrical chamber;
- g. a working gas source coupled into the cylindrical chamber;
- h. a second anode comprising a cylindrical metallic mesh grid and generally radially arranged around the central axis of the cylindrical chamber between the first anode and the central axis of the cylindrical chamber;
- i. a controlling unit connected to the first anode, the second anode, the at least one cathode, the generating means, the capacitor banks, the pre-heating electric power supply, and the working gas source;
- whereby the control unit controls a first voltage applied between the first anode and the at least one cathode, a second voltage applied between the second anode and the at least one cathode, a generated magnetic field, the working gas, and a power applied to the pre-heating electric power supply to produce ion movement towards the central axis of the cylindrical chamber and to heat ions in the cylindrical chamber and also to produce a rotation of the plasma therein, bringing about an increase of stability and a confinement of the plasma.
Dependencies are inferred from the claim text.