Patent ID: 6208711
Filing Date: 2001-03-27
Classification: A61B,G21K,H01J

Abstract:
A single potential ion clearing electrode system useable with an electron beam computed tomographic scanning system including a solenoid coil coaxially mounted about an axis of said scanning system, the electrode system positioned substantially within said solenoid coil and comprising:an array of at least three first elements, each of said first elements disposed along said axis and coaxial therewith and coupleable to a first node of an electrical power source; andan array of at least three second elements, each of said second elements disposed along said axis oppositely from a corresponding one of said first elements and coupleable to a second node of said electrical power source;wherein in cross-section, each of said first elements and of said second elements define complementary arc length and have an element dimension that increases with position along said axis such that a ratio between element radius and electron beam radius is substantially constant.