X-RAY TUBE FORMING A RAY FOCUSED ELECTRON BEAM SPOT CAPABLE OF FORMING AN OPTIMAL ELECTRON BEAM SHAPE

摘要

PURPOSE: An x-ray tube forming a ray focused electron beam spot is provided to form a focused ray shaped electron beam by mounting an electrostatic quadruple pole electron lens between a gate electron part and a focused electron part.;CONSTITUTION: A cathode part(110) generates an electronic beam through an electron beam emitting source. A gate electron part(120) induces the emission of electrons. A focused electron part(130) induces the focusing of the emitted electrons. A quadruple pole electron part(140) is arranged between the gate electron part and the focused electron part. The quadruple pole electron electron part generates a linear electron beam.;COPYRIGHT KIPO 2013;[Reference numerals] (110) Carbon nanotube(CNT); (120) Gate electron part; (131) First focusing electrode; (132) Second focusing electrode; (141) First quadrupole electrode; (142) Second quadrupole electrode; (150) Anode part;