Patent ID: 7883601
Filing Date: 2011-02-08
Classification: H01J

Abstract:
1. A plasma apparatus comprising: a plasma control structure that defines a first plasma flow passage and a second plasma flow passage, and is configured to independently vary a speed of a first portion of plasma flowing through the first plasma flow passage and a speed of a second portion of plasma flowing through the second plasma flow passage, wherein varying the speed of the first portion of plasma includes varying the size of the first plasma flow passage and wherein varying the speed of the second plasma flow passage includes varying the size of the second plasma flow passage, wherein a first plurality of openings in a first filter and a second plurality of openings in a second filter that are generally aligned, collectively define the first and the second plasma flow passages; and a controller using a plurality of actuators coupled to both of the filters with each filter having a plurality of actuators coupled to the plasma control structure and configured to effectuate movement in both a linear sliding direction and a rotational direction such that the movement in the sliding direction and/or the rotational direction varies the size of the first plasma flow passage and the second plasma flow passage, which varies the speed of the first portion of plasma flowing through the first plasma flow passage and also varies the speed of the second portion of plasma flowing through the second plasma flow passage.