11 results about "Beryllium window" patented technology

The utility model relates to an in-situ synchrotron radiation transmission type XAS battery testing device, which comprises a battery mould, the battery mould comprises a sealing cover, a main shell and a base, the sealing cover comprises a sleeve part inserted into the main shell, a first beryllium window is arranged at the lower end of the sleeve part, the base is fixedly arranged at the lower end of the main shell, and a second beryllium window is arranged in the middle of the base. A sealed space for containing the battery assembly is formed among the sleeve part, the main shell and the base, the upper side of the battery assembly is provided with a negative electrode making contact with the first beryllium window, and the lower side of the battery assembly is provided with a positive electrode making contact with the second beryllium window. And the base is provided with a positive lead connected with the charge-discharge instrument. According to the in-situ synchrotron radiation transmission-type XAS testing device, the combination of an electrochemical performance test and an in-situ synchrotron radiation transmission-type XAS test is realized, and the negative lead and the positive lead are respectively connected to the limiting flange part at the upper end of the sealing cover and the base, so that the sealing performance of an internal electrochemical cell cannot be damaged.

The application provides an X-ray communication device and method based on a laser-driven matrix photocathode. The device is applied to the technical field of X-ray tubes and comprises a laser control circuit, a matrix transmission photocathode array, a collimating microchannel plate, a matrix transmission anode target array, a vacuum tube shell and a beryllium window. The method comprises: generating a dynamic pattern, loading data information to be input into an optical signal; and exciting photoelectron emission with spatial resolution characteristics at a corresponding photocathode pixel area; each channel cluster is aligned with a single photocathode pixel at the front end; after the electrons enter the microchannel, continuous secondary electron emission occurs under the action of the electric field on the inner wall of the channel, and an avalanche effect is generated; and through mechanisms such as bremsstrahlung radiation, a bundle of microfocus X-rays is generated at each target point. In this way, the technical problems of the X-ray source in the prior art, such as the limitation in spatial coding capability, response speed, integration degree and communication dimension, can be solved.

The invention provides an X-ray communication device and method based on a laser driving matrix type photocathode. The device is applied to the technical field of X-ray tubes and comprises a laser control circuit, a matrix transmission type photocathode array, a collimation type structure micro-channel plate, a matrix transmission type anode target array, a vacuum tube shell and a beryllium window. The method comprises the following steps: generating a dynamic pattern, and loading data information to be input into an optical signal; photoelectron emission with spatial resolution characteristics is excited in a corresponding photocathode pixel area; each channel cluster is aligned with a single photocathode pixel at the front end; after the electrons enter the micro-channel, continuous secondary electron emission occurs under the action of an electric field on the inner wall of the channel, and an avalanche effect is generated; a beam of micro-focus X-rays is generated at each target spot through mechanisms such as tough-induced radiation. In this way, the technical problem that in the prior art, an X-ray source is limited in space coding capacity, response speed, integration degree and communication dimension can be solved.

The application discloses a beryllium window device with gas and water cooling protection, which is characterized by comprising a water cooling beryllium window and a gas beryllium window protection device; the gas beryllium window protection device comprises a Kapton film, two gas pipelines and a terminal flange; a fixed flange on the atmospheric side of the water cooling beryllium window is connected with the terminal flange, the Kapton film is installed in a knife edge of the fixed flange; two through holes are arranged on the side wall of the fixed flange and are respectively in sealed connection with the gas pipelines, one of the gas pipelines is used for connecting cooling air to cool beryllium sheets in the water cooling beryllium window, and the other gas pipeline is used for discharging gas to form air cooling circulation. On the basis of the water cooling beryllium window, a set of gas protection device is added, and the service life of the beryllium window can be prolonged by means of air cooling, and the harm of beryllium oxidation to the human body can be avoided.

The invention mainly relates to the technical field of X-ray tubes, and provides a time-resolved pulse X-ray tube which mainly comprises a time-resolved pulse light source, an X-ray tube sleeve, a transparent glass window, an electron multiplier, a photocathode material, a bias power supply, a high-voltage power supply, an electron focusing lens, an X-ray target material and a beryllium window. The pulse light source excites the photocathode material to generate photoelectrons, the photoelectrons are multiplied in the electron multiplier under the action of the bias electric field, and the multiplied electrons are focused into electron beam spots smaller than 1 mm under the action of the high-voltage electric field and the electron focusing lens to bombard the anode target of the X-ray tube at a high speed. Therefore, time-resolved pulse X-rays are generated. The pulse X-ray tube has a very important application prospect in X-ray dynamic imaging.

The invention discloses a double-atmosphere electrified high-temperature in-situ environment device and an application method thereof. The device comprises a shell and a base, the shell comprises a cylinder body and a lower end plate; the cylinder body is provided with an opening; a beryllium window is arranged at the opening; the upper end and the lower end of the shell are respectively provided with a gas inlet and a gas outlet; the lower end plate is provided with a groove; a mica sheet is arranged in the groove; a heating sheet and a pressing sheet are arranged in the mica sheet; cooling plates are respectively arranged at the upper end and the lower end of the shell; and the lower end plate is mounted on the base through a mounting piece. The invention provides a double-atmosphere energized high-temperature in-situ environment device, and aims to provide a multifunctional in-situ experimental environment with high-temperature control, atmosphere adjustment, energized loading and X-ray perspective capabilities for a synchrotron radiation light source and a laboratory X-ray platform so as to meet in-situ test requirements under a multi-physics field coupling condition.

This invention discloses a novel ceramic X-ray tube and its manufacturing method. The novel ceramic X-ray tube includes a beryllium window assembly and a cathode assembly. The beryllium window assembly includes a beryllium window support, within which a beryllium plate is sealed and fixedly connected. A target material is coated on the side of the beryllium plate closest to the cathode assembly. The cathode assembly includes a core assembly and a focusing sleeve. The core assembly includes a first electrode, a second electrode, and a ceramic inner tube. The focusing sleeve is fixedly mounted on the first electrode of the core assembly. Two Kovar wires are disposed within the focusing sleeve, respectively fixedly mounted on the first and second electrodes of the core assembly, and respectively fixedly connected to the two ends of a filament. A non-evaporable getter is fixedly mounted on the outside of the focusing sleeve. This invention has the advantages of reducing production steps, improving production efficiency, and facilitating mass production.

The invention discloses a machining method of an arc-shaped beryllium window, and belongs to the technical field of beryllium material machining. The method comprises the steps that S1, a blank is blanked according to the size of the arc-shaped beryllium window, and a to-be-machined part is obtained; s2, inner and outer cambered surface rough machining is conducted on the to-be-machined part according to the shape of the arc-shaped beryllium window, and a first arc-shaped beryllium sheet is obtained; s3, a first tool is adopted to clamp the first arc-shaped beryllium sheet for outer arc surface machining, and a second arc-shaped beryllium sheet is obtained; s4, a second tool is adopted to clamp the second arc-shaped beryllium sheet for inner arc surface machining, and a third arc-shaped beryllium sheet is obtained; and S5, corner burr removal and surface cleaning are sequentially conducted on the third arc-shaped beryllium sheet, and the final arc-shaped beryllium window is obtained. The arc beryllium window machined through the method is high in profile tolerance and cambered surface radius size precision and high in stability.

The present application relates to the technical field of vacuum electron devices, and particularly relates to a high-vacuum-sealing X-ray tube beryllium window brazing structure, which comprises a welding base, the welding base has a thin-wall supporting step and a base thick matrix, a narrow groove is arranged at the junction of the thin-wall supporting step and the base thick matrix, the narrow groove is an annular groove, which is used for avoiding empty turning of a round corner, releasing welding thermal stress and accommodating excess brazing filler metal, a brazing filler metal ring is placed on the thin-wall supporting step, a beryllium window is arranged above the brazing filler metal ring, and the beryllium window is limited by the base thick matrix. The present application avoids welding seam cracking caused by stress concentration, and improves heat shock resistance and vacuum sealing reliability.

The invention discloses a high-temperature transmission-fluorescence dual-mode in-situ pool device suitable for XAFS, and relates to the technical field of material detection equipment.The high-temperature transmission-fluorescence dual-mode in-situ pool device comprises a pool body which is of a bin body structure with an opening in the top; the number of the first windows is at least three, the first windows are arranged on the pool body, two of the first windows are located at the opposite positions of the same straight line, and the included angle between one of the first windows and the two first windows located on the same straight line is 45 degrees; a beryllium window is detachably arranged in the first window; the sample rack is rotationally arranged in the tank body. The invention has the advantages that: the plurality of first windows are arranged on the cell body, two of the first windows are positioned at opposite positions of the same straight line, the included angle between one of the first windows and the two first windows positioned on the same straight line is 45 degrees, and the beryllium windows are detachably arranged in the first windows; and two modes can be switched, so that the experiment efficiency is improved by 100%.

The invention discloses a preparation method of an ultra-thin beryllium sheet, the ultra-thin beryllium sheet and a beryllium window welding method, and belongs to the fields of energy, aerospace, material analysis and high-energy physics, the preparation method of the beryllium sheet precisely and controllably thinns an original beryllium sheet of 190-200 microns to 70-80 microns through a specific chemical corrosion process, and a clean and activated surface is obtained. According to the beryllium window welding method, the ultra-thin beryllium sheet prepared through the method and a metal supporting ring (such as a nickel ring and a copper-nickel alloy ring) are assembled and welded through an optimized vacuum brazing process, and a high-strength and high-airtightness sealing structure is formed. The technical problem that an ultra-thin beryllium window is difficult to machine and reliably weld is solved, the prepared beryllium window can remarkably improve the transmittance of X rays, and the beryllium window is particularly suitable for the field of analysis with the high requirement for low-energy X-ray sensitivity.