Abstract:
A radiation generating tube includes an electron emitting source configured to emit an electron beam; a target configured to generate radiation when the target is irradiated with the electron beam; a rear shield body having a tube-shaped electron passage with openings thereof at each end of the passage, and being located at the side of the electron emitting source with respect to the target, a first opening of the passage facing the electron emitting source and being separated from the electron emitting source, a second opening of the passage facing the target; and a brazing material joining the rear shield body with a peripheral edge of the target, at a position separated from the second opening. A closed space isolated from the electron passage is provided between the target and the rear shield body.
Abstract:
Provided is a radiation generating tube in which an insulating tube is prevented from being damaged by heat generation of a target or an electron emitting source during drive. Extending portions extending along an outer periphery of an insulating tube are provided to a cathode and an anode, respectively, and the insulating tube is joined to the extending portions to enhance the strength of joint portions. At the same time, the insulating tube can be deformed easily by setting a tube wall thickness of the insulating tube at a central portion in a longitudinal direction to be smaller than a tube wall thickness of an opening end, and thus the concentration of thermal stress on the joint portions caused by an increase in temperature of the cathode and the anode is alleviated.
Abstract:
Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.
Abstract:
Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.
Abstract:
In a radiation tube, a conductive member having an opening formed therein is disposed, and a dielectric is disposed in the conductive member. Thus, foreign matter that has entered the conductive member through the opening is trapped by the dielectric. As a result, discharge due to foreign matter can be reduced.
Abstract:
Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.
Abstract:
An X-ray generation tube includes: an anode including a target configured to generate X-rays under irradiation of electrons, and an anode member electrically connected to the target; a cathode including an electron emitting source configured to emit an electron beam in a direction towards the target, and a cathode member electrically connected to the electron emitting source; and an insulating tube extending between the anode member and the cathode member. The anode further includes an inner circumferential anode layer electrically connected to the anode member, the inner circumferential anode layer extending along an inner circumferential face of the insulating tube, and is remote from the cathode member.
Abstract:
An electrostatic lens includes multiple electrodes each having a through hole, and an insulating spacer that is provided between the electrodes and that fixes an interval between the electrodes. Both surfaces of the spacer are bonded with the electrodes opposing each other so that the spacer is integral with both the electrodes. A protective film is disposed on both surfaces of each of the electrodes. The protective film is present on the interior wall of the through hole and in a region around the through hole on the surface of the electrode. The region extends continuously from the interior wall to an end portion of the electrode. The protective film is not present at an interface between the electrode and the spacer.
Abstract:
An electrostatic lens includes multiple electrodes each having a through hole, and an insulating spacer that is provided between the electrodes and that fixes an interval between the electrodes. Both surfaces of the spacer are bonded with the electrodes opposing each other so that the spacer is integral with both the electrodes. A protective film is disposed on both surfaces of each of the electrodes. The protective film is present on the interior wall of the through hole and in a region around the through hole on the surface of the electrode. The region extends continuously from the interior wall to an end portion of the electrode. The protective film is not present at an interface between the electrode and the spacer.
Abstract:
In a radiation tube, a conductive member having an opening formed therein is disposed, and a dielectric is disposed in the conductive member. Thus, foreign matter that has entered the conductive member through the opening is trapped by the dielectric. As a result, discharge due to foreign matter can be reduced.