Diamond ray target, preparation method and application

Abstract

The invention discloses a diamond ray target, a preparation method and application. The diamond ray target comprises a diamond sheet, a window sealing-in ring, and a thin film anode. The diamond sheet is welded on the window sealing-in ring through a welding flux, and the thin film anode is deposited on one surface, facing an electronic beam, of the diamond sheet. The window sealing-in ring is provided with a connection hole, and two ends of the connection hole are stepped ends. The diamond sheet is put on the stepped ends, and is guaranteed to be compressed and welded on the window sealing-in ring in a welding process. After welding, a part outside the diamond sheet is blocked, and one face, facing the electronic beam, of the diamond sheet is provided with the film anode in a deposited manner. The optimization coating technology and the welding technology enable the thermodynamic contact performance among a transmission-type X-ray pipe diamond window, the film anode and a heat dissipation layer to be good, and can improve the reliability of a microfocus X-ray pipe during continuous use.

Description

technical field [0001] The invention relates to a projection window of a transmission type micro-focus X-ray tube, in particular to a diamond ray target, a preparation method and an application. Background technique [0002] The transmission micro-focus X-ray tube has the characteristics of high X-ray generation efficiency and high radiation flux density, which is the development trend of the micro-focus X-ray tube. Since the window and the metal anode of the transmission micro-focus X-ray tube are combined, the brightness of the X-ray source can be increased by increasing the heat-resistant power of the transmission window. Therefore, it is necessary to find a suitable window structure to obtain an X-ray source with high brightness and small focal spot. [0003] At present, the focal point of the small-focus X-ray tube is above 0.1mm, and the resolution is not high, which cannot meet the high requirements of some current X-ray tubes. Many X-ray tubes use beryllium windows ...

AI Technical Summary

Problems solved by technology

[0003] At present, the focal point of the small-focus X-ray tube is above 0.1mm, and the resolution is not high, which cannot meet the high requirements of some current X-ray tubes. Many X-ray tubes use beryllium windows and reflective anodes at the same time, which limits Magnification of X-ray imaging

However, the anode that uses transmission imaging is not connected with the window material, and the magnification cannot be increased. In addition, the anode is prone to melting, resulting in low image clarity.

And the beryllium window is used, but beryllium is highly toxic, expensive, and the thermal conductivity is relatively poor, which may easily cause the anode to melt due to untimely heat dissipation

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