The present invention includes an apparatus and method for depositing diamond on a substrate. A hydrocarbon/hydrogen gas mixture is passed through a refractory metal hollow cathode which is self heated to a high temperature. The gas mixture is dissociated by a combination of thermal and plasma effects....http://www.google.es/patents/US4830702?utm_source=gb-gplus-sharePatente US4830702 - Hollow cathode plasma assisted apparatus and method of diamond synthesis
Hollow cathode plasma assisted apparatus and method of diamond synthesis
