FEMTOSECOND ELECTRON BEAM GENERATING APPARATUS CAPABLE OF GENERATING AN ELECTRONIC BEAM WHICH HAS THE LENGTH OF THE FEMTOSECOND UNIT, AND A METHOD THEREOF

摘要

PURPOSE: A femtosecond electron beam generating apparatus and a method thereof are provided to center the electrons generated in the cathode to a pinhole by forming a focusing unit like an electrostatic lens in one side of the cathode.;CONSTITUTION: A permeable window(150) which is installed in one side of a cathode(100) passes through the incident laser. A pinhole(350) is formed in an anode(300) corresponding to the location of the electrons generated in the permeable window. A focusing unit is installed in one side of the cathode in order to generate the electric field. The focusing unit centers the electrons to the pinhole by accelerating the electrons. The focusing unit is composed of the electrostatic lens.;COPYRIGHT KIPO 2010