Patent ID: 9541514
Date: 2017-01-10
CPC Classifications: C23C,G01N,Y10T

Claim:
1. A consumable part of a plasma reaction chamber, the consumable part comprising: an electrode formed of electrically conductive material and including a surface to be exposed to plasma; conductive elements embedded in the electrically conductive material of the electrode and entirely surrounded by and electrically insulated from the electrically conductive material of the electrode by a dielectric layer; the electrode configured such that the conductive elements can be coupled to a probe circuit which can be coupled to a power supply and ground to apply a bias potential to the conductive elements relative to ground; and the conductive elements are operative to draw a current from the plasma upon exposure of the conductive elements to the plasma and the conductive elements are electrically connected to each other by a conductive wire embedded in and electrically insulated from the electrically conductive material of the electrode.