Transmission-type ray tube
A ray tube and transmissive technology, applied in the field of ray tubes, can solve the problem of easy wear and tear of the anode metal film target surface, and achieve the effects of increasing focusing and focal spot size, reducing loss and prolonging service life.
Pending Publication Date: 2021-06-18
WUXI UNICOMP TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a transmission type ray tube to solve the problem that the target surface of the anode metal film is easy to wear out in the prior art
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[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0015] see figure 1 with 2 , the present invention provides a technical solution: a transmission type ray tube, comprising: housing 2, anode, cathode 3 and power supply (not shown), one end of housing 2 is sealed with electrode 1, in this embodiment , the electrode 1 is a ceramic electrode, and the other end of the housing 2 is packaged with a beryllium window 5. The anode is a layer of metal film, which is directly plated on the inside of the beryllium windo...
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The invention relates to the technical field of ray tubes, in particular to a transmission-type ray tube which comprises a shell, wherein an electrode is sealed at one end of the shell, and a beryllium window is sealed at the other end of the shell; an anode which is arranged on the beryllium window of the shell and comprises a layer of metal film plated on the inner side of the beryllium window; a cathode which is arranged in the shell and comprises a lamp filament and a plurality of layers of cathode plates, wherein the lamp filament and the cathode plates are electrically connected with the electrodes respectively, the lamp filament emits electron beams, and the electron beams are accelerated and focused by the plurality of layers of cathode plates and then are converged on a target surface of the anode to form micron-sized X-ray focal spots; and a power supply which is electrically connected with the filament and provides energy for the filament to enable the filament to emit electron beams. The problem that in the prior art, an anode metal film target surface is prone to loss can be solved.
Description
technical field [0001] The invention relates to the technical field of ray tubes, in particular to a transmission type ray tube. Background technique [0002] The transmission X-ray tube is a new type of X-ray tube, which has high ray generation efficiency and radiation flux density. It abandons the reflective thick target, and chooses the transmissive target whose thickness can be accurate to several microns. X-rays can directly pass through the thin target and emit from the window with very little energy loss. The anode structure of the transmission X-ray tube is special, the heat is easy to gather at the anode and it is difficult to dissipate heat, and the anode end target is just a layer of metal film directly coated on the inner side of the beryllium window, and the X-ray energy emitted by the existing X-ray tube is very high , when hitting the target surface, it is very easy to cause the loss of the metal thin film target surface, which leads to the scrapping of the r...
Claims
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Login to View More IPC IPC(8): H01J35/06H01J35/14
CPCH01J35/06H01J35/14
Inventor 刘骏王刘成张伟
Owner WUXI UNICOMP TECH