Patent ID: 7403595

Claim:
An X-ray tube system with a disassembled carbon nanotube substrate for generating micro focusing level electron beams which has an X-ray tube in which electrons emitted from a cathode collide against an anode, the X-ray tube system comprising: a housing for providing a vacuum space so that the electrons emitted from the cathode collide against an anode; an anode installed in one side inside the housing and forming an electric field by means of a voltage applied from the outside and accelerating the electrons emitted from the cathode to reach the anode itself; a carbon nanotube substrate installed inside the housing as a cathode corresponding to the anode and spaced apart at a certain distance from the anode, and having a surface in which a carbon nanotube that emits electrons by application of voltage grows; a cathode plate for supporting and fixing the carbon nanotube substrate and applying a voltage to the carbon nanotube substrate; a sample probe installed assemblably/disassemblably in the housing and coupled to the carbon nanotube substrate to form one integrated set so that only a carbon nanotube substrate is exchanged when the carbon nanotube substrate is broken down; a grid electrode installed in front of the carbon nanotube substrate and extracting electrons from the carbon nanotube substrate in an easy manner; an electron focusing lens installed in front of the grid electrode and focusing the electrons passed through the grid electrode to form a micro level focus in the anode; a feed through installed in a plural number around the sample probe and applying a voltage to the cathode, the grid electrode and the electron focusing lens; a vacuum pump installed assemblably/disassemblably in one side of the housing and sustaining a vacuum state inside the housing in exchanging the carbon nanotube substrate; and a vacuum valve for isolating the inside from the outside of the housing when the sample probe is inserted into the housing and disassembled from the housing.