177 results about "Ktp laser" patented technology

The invention provides a laser plasma sound barrier and magneto-rheological antiknock array collaborative protection method. The method comprises the following steps: firstly, constructing a collaborative protection structure consisting of a laser plasma sound barrier layer and a magneto-rheological antiknock array layer; a shock wave leading signal is detected in real time and input into a preset multi-dimensional feature model, the model dynamically generates a protection strategy, and a sound barrier instruction and an anti-explosion instruction are output respectively. The laser plasma sound barrier layer outputs specific reverse sound waves according to a sound barrier instruction and attenuates shock waves through destructive interference; meanwhile, the magneto-rheological anti-explosion array layer instantaneously solidifies a magnetic field according to an anti-explosion instruction, and shock wave energy is efficiently absorbed. According to the laser plasma sound barrier and magneto-rheological anti-explosion array cooperative protection method provided by the invention, the cooperative protection structure and the preset multi-dimensional feature model are constructed, so that the cooperative effect of the sound barrier and the anti-explosion array is realized, the response speed to shock waves is increased, the energy processing efficiency is improved, and the adaptability and reliability of protection are enhanced.

The invention relates to the technical field of capacitor films. The invention discloses a preparation process of a high-performance polypropylene capacitor film. The preparation process comprises the following steps: A1, preparing a polypropylene capacitor film; a2, carrying out surface cleaning and activation pretreatment on the polypropylene capacitance film; a3, evaporating a gradient modified layer on the surface of the pretreated polypropylene capacitance film; a4, carrying out laser plasma synergistic treatment and crystallinity regulation and control on the modified polypropylene capacitor film; and A5, coating the outer layer of the modified polypropylene capacitance film with a functional layer, and carrying out annealing post-treatment to prepare the high-performance polypropylene capacitance film. The mechanical strength and the electrical stability are improved through nano filler dispersion, two-way stretching and crystallinity regulation and control; through the collaborative design of surface cleaning and activation and a gradient functional layer, excellent interface bonding force and environmental adaptability are given; and by means of technologies such as multi-source evaporation and laser plasma co-processing, precise regulation and control and diversified expansion of the performance are achieved, the method is suitable for various scenes, and the process repeatability is good.

The invention discloses a multi-physics coupling modeling method based on nanosecond laser etching microgroove resistance reduction simulation, relates to the technical field of laser processing, and is used for solving the problem of optimization of a microgroove resistance reduction effect in a laser etching process. According to the method, the drag reduction effect of the microgroove in the laser etching process is simulated by establishing a coupling model of a plurality of physical fields such as heat transfer, fluid dynamics and material removal. Specifically, an adaptive grid technology is adopted to accurately calculate a temperature field and a flow field in an etching process, and meanwhile, a pulse laser equivalent processing method is introduced to model influences of different scanning times and laser power, so that etching process parameters are optimized. According to the method, the drag reduction effect under different parameters can be efficiently predicted, a theoretical basis is provided for microgroove design and laser etching process optimization, and the method has a wide application prospect.

The present invention provides a low electromagnetic interference target chamber for laser plasma and its system, comprising: an outer vacuum target chamber, an inner metal target chamber and a radiation shielding channel; the inner metal target chamber is fixed inside the outer vacuum target chamber through an insulating support block, and the inner metal target chamber is at zero potential; the outer vacuum target chamber comprises: a first vacuum pipe arranged in the side wall, isolating the cable of the inner metal target chamber from the outer vacuum target chamber; the radiation shielding channel is arranged inside the inner metal target chamber, one end of the radiation shielding channel is sealed and connected to the inner metal target chamber; the other end extends toward the target material direction and communicates with the inner metal target chamber; the radiation shielding channel is a metal tubular structure with a cutoff frequency. The present invention sets an inner metal target chamber so that the electromagnetic interference generated by the laser plasma is blocked by the metal inner shielding layer, which greatly reduces the electromagnetic interference to the outer vacuum target chamber.

The invention belongs to the technical field of metal mines, and particularly relates to a rail cleaning device and a rail cleaning method.The rail cleaning device is characterized by comprising an electric driving device, a scraper device, a cleaning device, a dust suction device and a deep cleaning device, and the scraper device comprises a sliding groove, a sliding way, a rectangular spring arranged outside the sliding way and a triangular sliding block; a scraper assembly is arranged at the end of each sliding groove, a baffle and an arc-shaped stop block are arranged on the lower portion of each sliding groove, the sweeping device comprises a first cylindrical rolling brush and a second cylindrical rolling brush, the dust suction device comprises a dust suction opening, a filter screen and a fan, and the deep cleaning device comprises a laser plasma ejector. The scraping and shoveling device, the sweeping device, the dust suction device and the deep cleaning device are integrated, low-speed deep cleaning is carried out on the rail, slag sludge, rust and ice layers on the top of the rail are cleaned up, the number of times of emergency stop caused by slipping can be reduced, meanwhile, the number of times of turnover accidents caused by brake failure is reduced, and the service life of the rail is prolonged. The running condition of the mine car is effectively improved.

The invention discloses a preparation method of a solar cell, the solar cell and a photovoltaic module, and the preparation method comprises the following steps: providing a silicon wafer, the surface of which comprises a first region and a second region; sequentially forming a doping structure, a dielectric layer and a mask on the surface of the silicon wafer; carrying out patterning opening on the mask by adopting a laser process, and removing the mask in a first region; removing all the dielectric layer in the first region by adopting a wet etching process, and forming a window penetrating to the doping structure along the thickness direction of the silicon wafer in the dielectric layer; removing the mask in a second area on the surface of the dielectric layer; and preparing an electrode in contact with the doping structure at the window of the dielectric layer. According to the method, suede damage and passivation loss caused by windowing of the dielectric layer through laser and other processes can be remarkably reduced, a metallized structure with excellent electrical performance is obtained, the filling factor and the open-circuit voltage are remarkably improved, and the battery efficiency and the assembly power are greatly improved.

The invention discloses a curved surface microstructure laser-plasma combined machining device and method, and belongs to the technical field of non-traditional machining. The curved surface microstructure laser-plasma combined machining device comprises a plasma power supply, a gas supply system, a plasma generator, a nozzle assembly, a laser unit, a multi-axis moving unit, a vacuum clamp, a servo control system, a control panel and a machine tool body; and laser-plasma combined machining of the curved surface microstructure can be realized by combining linkage and interpolation movement of each shaft. Femtosecond laser is introduced into a plasma generation area, controllable output of a discharge plasma source is excited by the laser, micro plasma jet in a specific wavelength range is selected for micro-area localization machining, and the problem of machining defects caused by fluctuation and uneven distribution of jet particle energy in atmospheric plasma machining is solved. And meanwhile, laser is used for preheating in the machining area, energy needed by atom stripping of the to-be-machined material is reduced, the material atom stripping time is shortened, and the micro-plasma jet machining efficiency is greatly improved.

The invention provides a laser and plasma hybrid welding device, which belongs to the technical field of laser and plasma hybrid welding, comprises a workbench, and a laser and plasma hybrid welding machine and a position adjusting mechanism which are respectively arranged at the upper end of the workbench, and is characterized in that the position adjusting mechanism is used for adjusting the position of a welded workpiece; a first linear motor is arranged in the middle of the upper end of the workbench, a second linear motor is arranged at the upper end of a mover base of the first linear motor, a fixing column is arranged at the upper end of a mover base of the second linear motor, a sliding cylinder is slidably connected into the fixing column, a rectangular frame plate is arranged at the upper end of the sliding cylinder, and arc-shaped sliding grooves are formed in the two ends of the rectangular frame plate. A sliding plate is connected between the two arc-shaped sliding grooves in a sliding mode. According to the laser and plasma hybrid welding device, through coordination and cooperation of the position adjusting mechanism, the adjusting assembly, the driving assembly and the height adjusting assembly, the purpose of multi-dimensional automatic adjustment of the workpiece is achieved, it is guaranteed that the workpiece in a complex shape can be welded in place, and therefore the application range of the laser and plasma hybrid welding device is greatly widened.

The invention relates to the technical field of optical fiber connectors, and discloses an easy-to-assemble optical fiber connector, which comprises an optical fiber connector, and is characterized in that the optical fiber connector cannot be limited in an adapter, and an elastic telescopic column recovers to the original length under the action of an internal micro spring, so that a third annular plate is driven to be separated from the interior of a second annular plate; when the optical fiber connector is separated from the adapter, the optical fiber connector contacts the joint of the optical fiber connector and the adapter, and the optical fiber connector is gradually separated from the adapter under the action of an elastic telescopic column and a third annular plate until the optical fiber connector and the adapter are in a separated state, so that the phenomenon that the optical fiber connector is separated from the adapter due to the influence of external factors such as high-power laser between the optical fiber connector and the adapter is avoided. And the temperature between the two parts is gradually increased, so that the internal components of the two parts are damaged, and even the open fire phenomenon between the two parts can be avoided.

The invention discloses a binocular camera calibration method based on laser interference and two-dimensional grating diffraction, and the method comprises the steps: S1, configuring an interference light path: equally dividing a laser beam into two beams, transmitting the two beams through two interference arms, carrying out the beam combination, enabling the diffraction light spots to generate interference, and forming an interference image; s2, calibrating an interference light path: adjusting a light guide system until it is observed that an interference ring continuously diverges outwards from the center; and S3, binocular camera matching: the binocular cameras are placed on the light guide paths of the two interference arms respectively, it is ensured that the light path distances from the binocular cameras to the observation equipment are equal, the positions and angles of the binocular cameras are adjusted, the positions of diffraction spots coincide, and round bright spots are formed in the center. A laser interference measurement method is adopted, the measurement precision can reach one thousandth wavelength magnitude, the matching calibration precision is high, a sensor target surface pixel two-dimensional periodic distribution structure is used as a two-dimensional grating to diffract a measurement laser beam, no additional measurement device is needed, and the equipment cost is saved.

A method for generating ultrawideband pulsed microwave signals from optical field ionization of a gas with an ultrashort laser pulse, where the amplitude and frequency of the signals can be controlled via the characteristics of the laser pulse and / or the gas. The center frequency of the spectrum of the microwave signal can be controlled by changing the laser pulse energy. The amplitude of the microwave signal can be controlled by changing the wavelength of the laser pulses. The amplitude and frequency of the microwave signal can be tuned by controlling the pressure of the gas medium. The location at which the microwave signal is generated can be controlled by controlling the location at which the laser pulse creates a plasma. Interference among microwave signals resulting from multiple laser-produced plasmas can be used to construct an ultrawideband microwave signal having a predetermined amplitude and frequency.

The invention discloses a solar cell, a preparation method thereof and a photovoltaic module. The preparation method comprises the following steps: providing a silicon wafer; forming a doping structure on the surface of the silicon wafer; forming a patterned mask on the doped structure; forming a dielectric layer on the surface of the doping structure and the surface of the mask; the mask and the dielectric layer on the surface of the mask are removed, and a window penetrating to the doping structure in the thickness direction of the silicon wafer is formed in the dielectric layer; and preparing an electrode in contact with the doping structure at the window of the dielectric layer. According to the method, the patterned mask is prepared firstly, then the dielectric layer is deposited, and the mask is removed to form the window, so that the damage caused by windowing of the dielectric layer by adopting processes such as laser can be remarkably reduced, the growth of a subsequent electrode is ensured, a metalized structure with excellent electrical performance can be obtained, and the battery efficiency and the module power are improved.

The present invention discloses a laser plasma three-wavelength interference diagnostic device and an adjustment method thereof. The device includes a detection light source system, a plasma excitation system, a detection optical path system and a receiving system. The laser plasma generated by the laser excitation device is placed in the detection optical path of the Mach-Zehnder interferometer. The white pulse light source generated by the detection light source device is used as the detection light. The Mach-Zehnder interferometer divides the detection light into two beams, one beam passes through the laser plasma area, and the other beam is used as a reference light. The two beams meet after passing through the Mach-Zehnder interferometer. The receiving system includes an RGB filter grating and a color CCD. The light after meeting is divided into three beams of light with different wavelengths through the RGB filter grating to form three interference fringe patterns. The device can simultaneously obtain three interference fringe patterns carrying laser plasma phase information, obtain more data graphs, and make the results more accurate, effective and comprehensive.

An easy-to-adjust X-ray source enhancement system based on a cascaded high-density structure comprises a linear gas nozzle, a metal target, a fixed sleeve, a fixed rod and a three-dimensional mobile platform, and can effectively generate a two-stage high-density structure to enhance radiation of a betatron X-ray source. The device has the advantages of simplicity in operation, compact structure, generation of two-stage high-density structure distribution and good stability. The invention relates to the field of interaction of ultra-short and ultra-strong laser plasmas, in particular to a process of accelerating and driving high-brightness X-rays by laser tail field electrons, in the first stage, generated density falling edges are used for generating electron injection, and stable generation of large-charge electrons is promoted. And the second stage utilizes the characteristics of the high-density platform region to enhance the lateral oscillation of electrons, thereby improving the X-ray radiation energy and photon yield.

The invention provides a gas target generation method and device and an accelerator, and relates to the technical field of laser plasma accelerators. The gas target generation method provided by the invention comprises the following steps: placing a blocking sheet at a gas outlet; the gas target material is accelerated and sprayed out through a gas outlet so as to generate oblique shock waves, and then a gas target is formed; the laser pulse and the gas target act to form a tail wave field formed by plasma, ionization injection is carried out, and the complex phase and density gradient injection process is accelerated. Accelerating electrons are captured in the ionization injection process in the gas target density uniform distribution section, and electron beams reaching the deceleration phase return to the acceleration phase again through the acceleration multiphase process in the density rising section of the gas target, so that the acceleration distance is prolonged; through the density gradient injection process in the gas target density descending section, the charge quantity of electron beams is increased, the transverse amplitude is increased, and the number of single luminous photons of the Betatron X-rays is further efficiently increased.

The invention belongs to the technical field of optical fibers, and particularly discloses application of microcrystalline glass in an optical fiber ferrule and an optical fiber connector. The glass ceramic comprises the following components in percentage by weight: 50 to 80 percent of SiO2 (silicon dioxide), 5 to 40 percent of Al2O3 (aluminum oxide), 8 to 30 percent of Li2O (lithium oxide) and 0.1 to 3 percent of a strength additive, the strength additive is one or more of a rare earth metal compound, a transition metal compound, organic fibers, borate, phosphate, magnesium oxide or magnesium fluoride. According to the invention, the microcrystalline glass added with the strength additive is used as an insertion core material of the optical fiber connector, so that the optical fiber connector can show higher environmental stability and higher thermal shock resistance in an extremely high temperature environment, and performance fluctuation caused by high temperature thermal expansion and thermal cycle impact is reduced; and the method can be applied to high-temperature fields such as high-power laser and the like and fields with large environment temperature change.

The invention discloses an electromagnetic shielding case formed based on ultrafast laser plasma, and the electromagnetic shielding case comprises an ultrafast laser which is used for emitting ultrafast laser; the phase modulation element is used for carrying out annular modulation on the phase of the ultrafast laser to enable the cross section of a light beam to be in an annular shape; and the focusing device is used for pre-focusing the annular modulation light emitted by the phase modulation element in air to form a hollow cylindrical plasma cylinder, and the plasma cylinder is used for being nested at the periphery of equipment to be shielded so as to realize a signal shielding effect. Therefore, the generation and dissipation process of the ultrafast laser plasma is very rapid and can be completed on the nanosecond-level time scale, rapid response to electromagnetic waves can be achieved, and the method is suitable for occasions where the shielding effect needs to be dynamically adjusted.

The invention provides a method for measuring and compensating drifting and jittering of the position of an X-ray source, and relates to the technical field of X-rays. The method for measuring and compensating the drift and jitter of the X light source position comprises the steps that the original point of the initial position of the X light source driven by a laser plasma accelerator is collected; collecting the real-time jitter offset of the X light source in the application time; counting a real-time jitter offset, and calculating to obtain an average jitter offset within a specified time; the position of the laser target spot is adjusted according to the average jitter offset, so that the offset of the X light source is fed back and pre-compensated; and correcting a corresponding result generated by the X light source through data post-processing. According to the invention, through the synergistic effect of the method for adjusting the position of the laser target spot and the method for post-processing the data, the high-frequency jitter of the average jitter offset and the real-time jitter offset generated in the application process is compensated and corrected, and the precision and accuracy of the obtained result are improved.

The invention relates to the technical field of photoetching machine chip manufacturing. The invention relates to a method for changing wavelength of light waves by adding a deuterium medium to a photoetching machine. The method is characterized by mainly comprising a glass container (1) and deuterium (2). Light sources such as laser pass through the deuterium (2) in the glass container (1), the deuterium (2) and the light sources such as laser generate resonance, and the resonance generates light with shorter wavelength.

The present invention relates to a laser precision adjustment device, comprising: a first power source, an output end of which is used to provide a driving force for moving along a first direction; a linkage module, which is connected to the output end of the first power source and has multiple connecting parts, and the multiple connecting parts are driven by the first power source to move at equal intervals along the first direction; multiple support plates, with one support plate correspondingly connected to one connecting part; multiple mirror modules, with one mirror module installed on a support plate and comprising a reflector group and a galvanometer, the reflector group being used to receive and reflect laser light emitted by the laser module, and the galvanometer being used to receive reflected light from the reflector group and perform precision compensation; the multiple connecting parts are equidistantly moved in the first direction to realize equidistant adjustment of multiple lasers, and the laser light is highly precisely compensated in the galvanometer after being reflected by the reflector group, so that the product yield is high, the production capacity is high, the structure is relatively simple, it is easy to operate, the maintenance cost is low, the debugging is convenient, and the long-term operation stability is high.

The invention discloses a laser plasma additive composite welding device which comprises a workbench, a moving mechanism, a composite welding assembly and a rolling device, the moving mechanism comprises a transverse moving device, a longitudinal moving device, a vertical moving device and a portal frame, and a mounting part is arranged on a movable part of the vertical moving device; the composite welding assembly and the rolling device are arranged on the installation part at intervals, the composite welding assembly comprises a laser welding head and a plasma welding head, the rolling device comprises a support, a roller part and an elastic part, the upper portion of the support is connected with the installation part, the lower portion of the support is movably connected with a movable strip, and the movable strip is provided with a rotating shaft for being rotationally connected with the roller part. The elastic piece acts between the support and the movable strip, and the roller piece is sleeved with a heat-resisting ceramic sleeve. According to the plate-shaped part repairing device, the pressing roller device is driven by the moving mechanism to move, and the repairing material is pressed into the molten pool in a rolling mode, so that the damaged area of the plate-shaped part is fully filled with the repairing material, and the quality of the repaired plate-shaped part is guaranteed.

This article is a polishing pad comprising a polishing layer and a cushioning layer laminated together. The partial design features a configuration in which a plate-shaped window made of a transparent material is fitted into a recess formed in the polishing layer, and the product is used by transmitting light such as laser light through the window.

The invention relates to the technical field of precious metal alloy material manufacturing, in particular to a process for hardening treatment of gold through micro-nano metal powder, which comprises the steps of blank charging, smelting, vacuum ingot casting, surface cleaning, rolling stretching and age hardening, product surface treatment, product welding and the like. The method has the advantages that in the aspect of material selection, the micro-nano metal powder, such as titanium powder and cobalt powder, is diversified and is small in adding amount, various strengthening mechanisms can be provided, and the economical efficiency is guaranteed. The smelting process is accurate, good vacuum and temperature control is achieved, and stirring is uniform after micro-nano metal powder is added. And rapidly solidifying the cast ingot by using a water-cooling copper mold, treating the surface by using aqua regia and the like, and drying. Midway annealing can be executed through rolling and stretching, and the process is flexible. Product manufacturing processes are diversified, and surface treatment includes polishing, electroplating, coloring and the like. Advanced modes such as laser are adopted for welding to avoid hardness reduction. According to the process, the gold hardening treatment effect and quality are improved from multiple aspects, different requirements are met, and wide application prospects are achieved.

The present application relates to a kind of adjustable thrust and specific impulse of multi-working substance mixed effect laser plasma micro-propeller, solid working substance supply system includes multiple solid working substance, wherein one solid working substance is located in the middle, the rest is uniformly arranged in the periphery of the solid working substance in the middle along the circumferential direction, each solid working substance is fixed on the installation base by fixed assembly B, the material of each solid working substance is two or more than two in metal, high molecular polymer, energy material;Laser system includes control power supply and multiple laser assembly, the number of laser assembly is same with the number of solid working substance, one-to-one correspondence, wherein one laser assembly is located in the middle, the rest is uniformly arranged in the periphery of the laser assembly in the middle along the circumferential direction.The present application can make the thrust and specific impulse generated by propeller can be adjusted in a large range by adjusting the independent action of laser and single solid working substance or the coupling effect of laser and multiple types of solid working substance, satisfy more complex space task.

This application provides a method, apparatus, and accelerator for generating a gas target, relating to the field of laser plasma accelerator technology. The method for generating a gas target includes placing a baffle plate at a gas outlet; accelerating a gas target material and ejecting it through the gas outlet to generate an oblique shock wave, thereby forming a gas target; and using a laser pulse to interact with the gas target to form a wake field composed of plasma, resulting in ionization injection, accelerated phase re-phase, and density gradient injection processes. This application captures accelerated electrons during the ionization injection process in the uniform density distribution section of the gas target, extends the acceleration distance by allowing the electron beam, which has reached a deceleration phase, to return to the acceleration phase during the accelerated phase re-phase process in the density rising section of the gas target, and increases the charge and transverse amplitude of the electron beam during the density gradient injection process in the density falling section of the gas target, thereby efficiently increasing the single-emittance number of Betatron X-rays.

The application relates to a kind of plasma diagnostic method and device based on femtosecond laser filament probe, belong to laser plasma diagnostic technical field, method utilizes the high peak power characteristics of femtosecond laser to form the femtosecond filament probe with only hundred microns in diameter and only several millimeters in length, and the internal substance of plasma can be excited again.Spectra signals when using and not using femtosecond filament probe are collected respectively, and the element information at the position of femtosecond filament probe at this moment is obtained by differentiating the spectrum.By scanning the relative position of femtosecond filament probe and plasma, the material content information at different spatial positions in plasma can be obtained, and by changing the delay time when femtosecond laser pulse and plasma are generated, the material distribution information in plasma at different time can be obtained, and the four-dimensional distribution information of the material in plasma can be obtained by coincidence of the spectrum under different positions and different delay times.

The invention relates to a technology for enhancing the cohesiveness of a carbon-carbon matrix and a SiC ceramic powder coating, and relates to the technical field of high-end brake materials, and the specific bonding steps are as follows: taking a carbon fiber preform plate as a raw material, placing in an isothermal chemical vapor deposition furnace, depositing for 150-200 hours at 1000-1100 DEG C and normal pressure, and increasing the density to 1.3 g / cm < 3 > to obtain a carbon / carbon composite material blank; according to the technology for enhancing the cohesiveness of the carbon-carbon matrix and the SiC ceramic powder coating, coating preparation is completed through three steps of CNC mechanical slotting, phenolic resin-SiC powder hot pressing and primary fusion siliconizing, and laser / plasma surface modification or 1-5 [mu] m isotropic carbon transition layer deposition needed in the prior art is completely replaced; equipment is simplified from a laser / plasma or high-temperature CVD (Chemical Vapor Deposition) system to a conventional CNC (Computer Numerical Control), a hot press and a siliconizing furnace, and the investment of a single production line is reduced by more than 30%; the production period is shortened from 7-10 days to 2-3 days, manpower and energy consumption are synchronously reduced, the unit cost is reduced by 25%-40%, and low-cost and large-scale industrial production is truly achieved.

The invention provides a mold sticking excess material cleaning device and method. The mold sticking excess material cleaning device comprises a heating table, a supporting rod, a mold table and a scraping piece. The bottom end of the supporting rod is connected with the side face of the heating table. The mold table is arranged above the heating table. The mold table is of a frame structure, and the bottom face of the side face of the mold table is connected with the top face of the heating table. And the scraping blade is connected with the upper end of the supporting rod. When the mold sticking excess material cleaning device is used for cleaning mold sticking excess materials, the scalding risk does not exist, safety and effectiveness are achieved, and operation is convenient and fast; the die surface cannot be damaged, and the service life of the die is prolonged; extra conditions such as mold cleaning glue and laser are not needed, the structure is simple, and the cost is low.

The invention provides an image bright field correction method and device for a laser plasma accelerator, electronic equipment and a storage medium, and relates to the technical field of X-ray imaging. The method comprises the following steps: acquiring dark fields and initial X-ray beam spot images of an X-ray bright field calibration detector and an X-ray imaging detector to obtain coordinates of an initial X-ray beam spot center; under the condition that the imaging sample is moved in, a real-time unprocessed X-ray beam spot image obtained by the X-ray bright field calibration detector and a real-time unprocessed projection image obtained by the X-ray imaging detector are obtained, so that a real-time beam spot image and a real-time imaging image are obtained, and coordinates of a real-time X-ray beam spot center are obtained; according to the coordinate difference between the real-time X-ray beam spot center and the initial X-ray beam spot center, the X-ray beam spot center is obtained, and a final real-time projection image is obtained. According to the invention, the accuracy of bright field correction is improved by measuring the X-ray beam spot in real time and combining geometric space mapping and coordinate transformation.

The invention discloses a method and a system for quantitatively analyzing the vacuum degree of a vacuum switch. The method comprises the following steps: acquiring laser plasma spectral data of a preset target material in a to-be-detected vacuum environment; extracting spectral intensity data of a characteristic spectral line according to the spectral data; laser plasma spectral characteristic parameters are obtained according to the spectral intensity data; and according to the laser plasma spectrum characteristic parameters, obtaining the vacuum degree to be measured by using a preset relation between the laser plasma spectrum characteristic parameters and the vacuum degree. The target material preset in the to-be-detected vacuum environment is induced by laser to generate the laser plasma, the spectrum and morphology characteristics of the laser plasma are detected to obtain the vacuum degree of the to-be-detected vacuum switch, non-contact vacuum degree detection is achieved, the stability of the spectral characteristic parameters of the laser plasma representing the vacuum degree is higher, and the detection accuracy is higher. The vacuum degree can be better represented, the anti-interference capability is higher, and the method is more practical.