Plasma generation and plasma processing of materials
First Claim
1. A plasma generator comprising:
- a first electrode unit for generating a first plasma flow;
a second electrode unit for generating a second plasma flow meeting the first plasma flow;
a first magnetic field generator for generating a first magnetic field for moving the first plasma flow in a first direction towards or away from the second plasma flow; and
a second magnetic field generator for moving the first and second plasma flows in a direction transverse to the first direction, wherein a magnetic field generated by the second generator to move the first plasma flow is controllable independently of the first magnetic field.
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Accused Products
Abstract
A plasma generation system includes one or more pairs of electrode units. Each electrode unit emits a plasma carrying gas along a respective axis. Each pair of electrode units is connected to an electric power supply that creates an electric discharge through the gas jets emitted by the two units. The axes of the two units define a "basic" plane. Each unit is associated with a magnetic circuit having two poles on the opposite sides of the basic plane. Each of these circuits is used to move the plasma gas jet emitted by the respective unit towards or away from the plasma jet emitted by the other unit of the pair of units. Therefore, these circuits control the angle at which the plasma jets meet. In addition, for each pair of the electrode units, a three-pole magnetic circuit is provided to move the plasma jets perpendicularly to the basic plane. The three poles of the magnetic circuit extend substantially along the basic plane. The three poles include a "first" pole, a "second" pole, and "middle" pole between the first and second poles. One of the plasma jets is controlled by the magnetic field passing through the first and middle poles, and the other plasma jet is controlled by the magnetic field passing through the second and middle poles.
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Citations
20 Claims
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1. A plasma generator comprising:
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a first electrode unit for generating a first plasma flow; a second electrode unit for generating a second plasma flow meeting the first plasma flow; a first magnetic field generator for generating a first magnetic field for moving the first plasma flow in a first direction towards or away from the second plasma flow; and a second magnetic field generator for moving the first and second plasma flows in a direction transverse to the first direction, wherein a magnetic field generated by the second generator to move the first plasma flow is controllable independently of the first magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A plasma generator comprising:
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a first electrode unit for emitting a first plasma flow along a first axis; a second electrode unit for emitting a second plasma flow along a second axis at an angle to the first axis; a first magnetic circuit having two poles on opposite sides of a region containing the first and second axes; and a second magnetic circuit having first, second, and third poles positioned along said region, for generating a first magnetic field passing through the first and third poles and for generating a second magnetic field passing through the second and third poles, such that the first magnetic field intersects the first axis and the second magnetic field intersects the second axis. - View Dependent Claims (11, 12)
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13. A method for generating plasma, the method comprising:
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emitting first and second gas flows at an angle to each other; creating an electric discharge through the first and second gas flows; generating a magnetic field B1 intersecting the first gas flow, to control the angle at which the first and second gas flows meet; generating a first magnetic field intersecting the first gas flow and a second magnetic field intersecting the second gas flow, wherein the first magnetic field is transverse to the field B1, and wherein the first and second magnetic fields are controlled independently from the field B1. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification