Patent ID: 7009342
Filing Date: 2006-03-07
Classification: H01J

Abstract:
1. A plasma electron source having a function of a cathode for a gaseous discharge apparatus, comprising inner and outer pole pieces made as bodies of revolution having central holes, with a magnetomotive force source arranged between them, and comprising also, placed in a sealed housing, an arc diaphragmed hollow cathode with a gas feed device as well as, installed between coaxial outlets of the cathode and housing, intermediate and main anodes made as bodies of revolution having central holes, characterized in that the intermediate anode, the inner pole piece, the main anode and the outer pole piece are installed successively between and in line with the outlets of the cathode and housing; in that the main anode is made of a magneto-weak material and positioned so that at least 30% of the magnetic flux created in a space between the pole pieces flows through its hole; and in that the inner and outer pole pieces are electrically connected with the cathode.