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54 results about "Plasma spectroscopy" patented technology
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Plasma Spectroscopy Plasma, whether astrophysical or produced in the laboratory, is a state of matter that exists over very large domains of densities and temperatures. Its properties can be studied based on emission of radiation through spectroscopy.
Analysis of component for presence, composition and/or thickness of coating
A method comprising the following steps: (a) providing a turbine component comprising a metal substrate having an external surface; and (b) analyzing the external surface by laser plasma spectroscopy to determine whether a metallic coating is present on or absent from the external surface. If a metallic coating is determined to be present on the external surface, the elemental composition, elemental concentration and / or thickness of the metallic coating present on the external surface may be determined (qualitatively and / or quantitatively) by laser plasma spectroscopy. Another method comprises the following steps: (a) providing a turbine component comprising a metal substrate having an external surface which has been subjected to treatment to remove a metallic coating applied to the external surface; and (b) analyzing the treated external surface by laser plasma spectroscopy to determine the degree of removal of the metallic coating from the treated external surface.
Owner:GENERAL ELECTRIC CO
Laser plasma spectroscopy apparatus and method for in situ depth profiling
An in-situ laser plasma spectroscopy (LPS) system for automated near real-time elemental depth profiling of a target including: an optical source configured to generate an optical beam, wherein the optical beam is pulsed; an optical probe system configured to deliver the optical beam from the optical source to a surface of a target to generate an ablation plasma; a time resolved spectral detection system configured to generate time resolved spectral data from emission signals from the ablation plasma; and a data acquisition and processing system configured to acquire the time resolved spectral data to determine, in combination with predetermined calibration data, an absolute elemental concentration as a function of depth in near real-time.
Owner:GENERAL ELECTRIC CO
System and method for detecting and analyzing compositions
InactiveUS7535565B1Quick testRadiation pyrometrySpectrum investigationLaser beamsPlasma spectroscopy
A system and method for performing laser plasma spectroscopy on a surface of a component, particularly to detect, analyze, and determine the extent of deposit build up on turbomachine components protected by coatings that are susceptible to damage from infiltration of deposits. The system includes a laser energy source and a probe interconnected with the laser energy source to receive a laser beam therefrom and then direct the laser beam onto the surface of the component and scan an area of the surface while the component remains stationary. The probe is further configured to collect radiation emitted from a laser-induced plasma generated by the laser beam at the surface of the component. The system is further equipped to transmit the radiation from the probe and spectrally analyze the radiation.
Owner:GENERAL ELECTRIC CO
Fiber optical apparatus and system for in situ laser plasma spectroscopy
In in-situ laser plasma spectroscopy (LPS) apparatus includes an enclosure for housing a laser energy source and associated signal coupling optics. A main fiber is attached to the enclosure at a first end of the main fiber, and attached to a probe at a second end of the main fiber. The main fiber is configured for transmitting input laser energy from the laser energy source to a target and for transmitting laser induced plasma emission signals back from the target. The probe has a single focal lens for directing the input laser energy from the main fiber to the target, and for directing the laser induced plasma emission signals from the target to the main fiber.
Owner:GENERAL ELECTRIC CO
Fiber optical apparatus and system for in situ laser plasma spectroscopy
Owner:GENERAL ELECTRIC CO
Laser plasma spectroscopy apparatus and method for in situ depth profiling
An in-situ laser plasma spectroscopy (LPS) system for automated near real-time elemental depth profiling of a target including: an optical source configured to generate an optical beam, wherein the optical beam is pulsed; an optical probe system configured to deliver the optical beam from the optical source to a surface of a target to generate an ablation plasma; a time resolved spectral detection system configured to generate time resolved spectral data from emission signals from the ablation plasma; and a data acquisition and processing system configured to acquire the time resolved spectral data to determine, in combination with predetermined calibration data, an absolute elemental concentration as a function of depth in near real-time.
Owner:GENERAL ELECTRIC CO
Online detection system of element content of industrial solid powder
InactiveCN102095713AAdjust production status in timeReal-time online detectionFluorescence/phosphorescenceProduct gasPlasma spectroscopy
Owner:太原市敏通科技有限公司
Calibration method and device based on laser induced plasma spectroscopy and method and device for measuring equivalent ratio of combustible gas to oxidant
InactiveCN102706850AImprove calibration accuracyImprove signal-to-noise ratioFluorescence/phosphorescenceResponse sensitivityFluorescence
The invention relates to a calibration method and a calibration device and a method and a device for measuring equivalent ratio of combustible gas to oxidant, in particular to a calibration method and a calibration device based on laser induced plasma spectroscopy and a method and a device for measuring equivalent ratio of combustible gas to oxidant, aiming at improving the calibration accuracy of the existing calibration method, improving the measuring accuracy of the equivalent ratio of fuel to oxidant in the existing combustion system and improving the convenience in measurement of equivalent ratio of mixed fuel gas. Since plasma fluorescence signal intensity is high, the signal-to-noise ratio is high and the response sensitivity of an ICCD (intensified charge coupled device) which is used as light signal receiving equipment in a spectrograph is high, the measuring accuracy of the method provided by the invention is higher than the measuring accuracy of other existing equivalent ratio measuring method. Since the method is a non-contact measuring method, laser beam and fluorescence signal receiving equipment are not limited by spatial positions and the signals are convenient and rapid to process at a later stage, the method can satisfy the requirement on real-time online measurement. The technical scheme is suitable for the calibration method and the calibration device based on laser induced plasma spectroscopy and the measurement of equivalent ratio of combustible gas to oxidant.
Owner:HARBIN INST OF TECH
System and method for analysis of Martian mineral component by using double multiplexing laser spectrum
ActiveCN105372225AExpand the scope of analysisImprove the comprehensiveness of detectionRaman scatteringFluorescenceRotation control
The invention discloses a system and method for analysis of Martian mineral components by using double multiplexing laser spectrum. The system includes an optical head, a short wavelength spectrometer, a medium wave spectrometer, a long wavelength spectrometer, a calibration board bracket, a calibration board, a pointing mirror bracket, a two-dimensional pointing mirror, a two-dimensional rotation control component, a pointing mirror control cable and a load controller. Based on the system, the combined detection of atom and molecular can be achieved by combined detection of laser induced plasma spectroscopy and laser Raman spectroscopy. The invention provides a double multiplexing laser spectrum detection system and method; a same pulse laser source and three frequency multiplication modules are used to realize the multiplexing of light sources; and short, middle and long wave spectrometers in the same length and the corresponding spectrum ICCD area array detectors are used to achieve the multiplexing of beam split and spectral detection. In addition, remote micro area imaging and laser self-focusing function are achieved to share a main optical path. The invention effectively expands the scope of Martian mineral analysis, and the system is compact and convenient, reduces the fluorescence interference and improves the comprehensiveness of molecular detection.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Laser welding optimization method based on laser induced plasma spectroscopy and device thereof
ActiveCN106312310AOptimizing Laser Welding Process ParametersImprove the quality of laser weldingLaser beam welding apparatusSignal qualityExcitation temperature
The invention discloses a laser welding optimization method based on laser induced plasma spectroscopy and a device thereof. The method comprises the following steps of: initially setting N welding parameters and randomly selecting one of the welding parameters as a variable welding parameter; adjusting the value of the variable welding parameter and collecting a plasma spectral signal of a welding workpiece in a laser welding process under each of the variable welding parameters; calculating the plasma relative excitation temperature according to the plasma spectral signal and obtaining the plasma relative excitation temperatures corresponding to different variable welding parameters thereby; and selecting the variable welding parameter corresponding to the optimum welding quality as the optimized result. The method has the advantages of being simple to operate and capable of quickly determining proper laser welding parameters and improving the laser welding quality. The laser welding device disclosed by the invention comprises a laser, a spectrum collecting focusing probe, a spectrograph, a signal processor and the like, and has the advantages of being flexible to adjust and capable of acquiring the laser induced plasma spectral signal which is good in signal quality.
Owner:HUNAN UNIV
Method for testing surface hardness of composite insulating material
InactiveCN106501237AQuick judgment of surface hardnessSurface hardness judgmentAnalysis by thermal excitationLight beamFunctional Relationship
A method for testing the surface hardness of a composite insulating material comprises the following steps: S1, preparing a composite insulating material sample, of which the surface hardness is measured; S2, irradiating the surface of the composite insulating material sample by pulse laser beams and by a laser-induced breakdown spectroscopy (LIBS) method, and catching the laser-induced plasma spectroscopy of the surface; S3, establishing a functional relationship between a ratio of an ionic line to an atomic line of a selected element in the laser-induced plasma spectroscopy and the surface hardness value; S4, irradiating the surface of a to-be-tested composite insulating material by pulse laser beams and by the LIBS method, and catching the laser-induced plasma spectroscopy of the surface; and S5, determining the surface hardness of the to-be-tested composite insulating material according to the laser-induced plasma spectroscopy obtained in the step S4 and on the basis of the functional relationship between the ratio of the ionic line to the atomic line and the surface hardness value. By the method, the composite insulating material can be subjected to remote and electriferous on-site test, so that the accurate surface hardness of the composite insulating layer can be obtained quickly.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Electron cyclotron resonance ion source
The invention provides an electron cyclotron resource ion source, in particular relates to a novel structured all-permanent magnet high-current electron cyclotron resonance (ECR) ion source capable of directly observing internal discharge of an ion source. In the electron cyclotron resource ion source, quartz glass with high light transmission is adopted as a discharge chamber; microwave leakage caused by the quartz glass can be shielded by a special structured metal shell which is arranged outside the quartz glass and provided with a window; and a magnetic field required by electron cyclotron is generated by a plurality of separated permanent magnetic rings, and a plurality of gaps are formed among the rings. Therefore, through the window of a shielding shell, gaps among the permanent magnetic rings and the transmitting quartz glass, the whole process occurring in the discharge chamber and various states of plasma can be observed in real time uninterruptedly at a plurality of angles in a plurality of positions, and diagnostic study on plasma spectrometry can be developed uninterruptedly.
Owner:PEKING UNIV
Method for preparing aluminum alloy solution example when detecting aluminum alloy constituent by plasma spectroscopic method
ActiveCN101131340AFast dissolutionSimple stepsPreparing sample for investigationAnalysis by electrical excitationStrong acidsAcid strength
The invention relates to method of sample solution when using plasma spectroscopy method to measure aluminum alloying composition. The method first place solid aluminum alloying samples in the plastic container, then add enough non-oxidative strong acid solution to plastic container and make the strong acid and aluminum alloying samples fully contact, there are bubbles generate in the mixtures in the plastic container, until no bubbles generate then drop nitric acid and hydrofluoric acid aqueous solutions to the compound mixture until solid aluminum alloying samples all dissolve, stewing to make the solution clarified then dilute to calibration volume and shake to uniform then the aluminum alloying sample solution will be obtained; or stewing to make the solution clarified, after the after treatment then dilute to calibration volume and shake to uniform then the aluminum alloying sample solution will be obtained. The aluminum alloying samples solution made by the method of this invention are of low salinity, low spectral background and easy to measure trace impurity elements.
Owner:CRRC QISHUYAN CO LTD
Cement raw meal three moduli measuring method based on partial least squares
ActiveCN106442474AReduce distractionsImprove forecast accuracyAnalysis by thermal excitationConcentration ratioPlasma spectroscopy
The invention provides a cement raw meal three moduli measuring method based on partial least squares, relating to a method for detecting material components by laser induced plasma spectroscopy. The method comprises the following steps: firstly detecting cement raw meal calibration samples with known components by adopting an LIBS system and building calibration models of element concentration ratio and characteristic spectrum line intensity ratio by utilizing a spectrum standardization method according to the obtained characteristic spectrum line intensity; then carrying out online detection on the samples to be detected and obtaining LIBS spectra, judging the element concentration ratio through the regression results and then determining the three moduli of cement raw meal by substituting the spectrum line information obtained through measurement into the built calibration models. The method has the effects of taking full advantage of the spectrum line information obtained by the LIBS spectra, considering the influence of the interference elements on the measuring results and reducing the interference of matrix effects and has the characteristics of good goodness of fit, strong repeatability and high prediction accuracy compared with traditional univariate calibration methods.
Owner:TSINGHUA UNIV
Plasma spectroscopy system with a gas supply
ActiveUS20090059221A1Improve performanceSatisfactory operationRadiation pyrometryParticle separator tubesNitrogen generatorForming gas
A spectroscopy system for spectro-chemical analysis of a sample includes a plasma torch (50) for generating a microwave induced plasma (90) as a spectroscopic source. The plasma forming gas is nitrogen which can contain an oxygen impurity. Thus the system includes a nitrogen generator (70) which is preferably supplied with compressed atmospheric air from a compressor (75) for oxygen to be removed from the air by adsorption. The invention allows the use of an on-site nitrogen gas generator and thus gives cost savings because the need to obtain supplies of bottled high purity gas is eliminated.
Owner:AGILENT TECH AUSTRALIA M
Plasma spectroscopy analysis method
ActiveCN109211877AImprove accuracyAccuracy CorruptionEmission spectroscopyPreparing sample for investigationThalliumLength wave
A plasma spectroscopy analysis method is provided which can suppress deviation of the luminescence amount of plasma luminescence caused by thallium that is a contrast metal component and an endogenicsubstance during detection of lead or mercury in a urine sample. A urine sample assumed to contain mercury or lead is diluted, and then a known concentration of thallium is added to the diluted urinesample. The resulting mixture is introduced to a measurement container, and an electric current is applied across a pair of electrodes in the measurement container such that the mercury or lead and the thallium in the urine sample are concentrated in a vicinity of one of the electrodes. An electric current is then applied across the pair of electrodes to generate plasma, and emitted light from themercury or lead and the thallium is detected. According to the luminescence spectrum obtained during detection, an analysis emission amount that is a net emission amount at an analysis wavelength that is a wavelength corresponding to the mercury or lead is corrected using a control emission amount that is a net emission amount at a control wavelength that is a wavelength corresponding to the thallium. The corrected value is compared to a calibration curve obtained by advance measurements of known concentrations of the mercury or lead in order to quantify the mercury or lead in the urine sample.
Owner:ARKRAY INC
Method of measuring trace metals copper and zinc in nickel-cobalt solution
ActiveCN109883971AEfficient detectionNo wasteAnalysis by thermal excitationColor/spectral properties measurementsTrace metalAlloy
The invention discloses a method of measuring trace metals copper and zinc in a nickel-cobalt solution. The method comprises steps of filtering the nickel-cobalt solution by using a microporous membrane, so as to keep single metal element in the nickel-cobalt solution on the membrane; then, selectively dissolving metal copper, zinc or other alloy on the microporous membrane by using aqueous ammonia, so as to allow metals copper and zinc on the membrane to enter the solution; and then measuring copper and zinc in the solution by using atomic absorption spectroscopy or plasma spectroscopy, so asto obtain content of metals copper and zinc in the solution. The method is simple, can detect trace metals copper and zinc in a solution effectively, and delivers an accurate and reliable result; treated solution can be returned to the production line directly, so that the material is not wasted. The method is suitable for measuring trace metals copper and zinc in nickel sulfate, cobalt chloride,cobalt nitrate, cobalt sulfate and nickel-cobalt mixed solutions or nickel and cobalt-dominated metal mixed solutions.
Owner:LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
Electrode-assisted microwave-induced plasma spectroscopy
Particles of a flow of aerosol are collected and analyzed by passing them through a housing having an inlet area, an outlet area, and a collection and analysis area. A collection electrode has a tip disposed in the flow path in the collection and analysis area. Particles are collected on the tip of the collection electrode. A microwave pulse is applied to the collection and analysis area such that a plasma is created. Atomic emissions produced during at least part of the microwave step are collected for analysis of the ablated particles.
Owner:UNITED STATES OF AMERICA
Plasma spectroscopy system with a gas supply
ActiveUS7554660B2Improve performanceSatisfactory operationRadiation pyrometryParticle separator tubesNitrogen generatorForming gas
Owner:AGILENT TECH AUSTRALIA M
Optical system for laser-induced detection
InactiveCN102866134APrevent breakdownAvoid damageAnalysis by material excitationMountingsBeam splitterLight beam
The invention belongs to the field of laser-induced detection, and relates to a laser lead-in optical system of a novel laser-induced detecting device, in particular to a laser lead-in optical system by which laser is gathered on the surface of a substance to be detected, ingredients of the substance to be detected are obtained through plasma spectroscopy triggered by the laser, or defects in the material are obtained by analysis through ultrasound stimulated in the substance and on the surface of the substance through the laser. The laser lead-in optical system comprises an outer sleeve, a beam splitter prism, a beam splitter baffle plate, a light beam selecting baffle plate and a light gathering sleeve, the light gathering sleeve can be replaced by a reflector group, or an electric controller or a focusing lens can be added. Induced adjustment and control are realized by a method of splitting laser beams, controlling the energy of a single laser beam to be lower than an induced stimulant threshold value, and controlling the energy of the laser beams to be higher than the stimulant threshold value when the laser beams are combined, and the problem that the laser is focused on the substance to be detected or gas breakdown is caused can be solved.
Owner:ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI +1
Uniform substance based laser induced breakdown spectroscopy correction method
ActiveCN106546576AUse lessExtended maintenance cycleAnalysis by thermal excitationFluorescenceLaser-induced breakdown spectroscopy
The invention belongs to the technical fields of spectral analysis and detection method, and specifically relates to a uniform substance based laser induced breakdown spectroscopy correction method. Because the environment of an industrial site is bad and there are many dusts, the optical elements (especially the optical transceiving windows contacted with the external environment) of an optical detection system used in a laser induced breakdown spectroscopy technology (LIBS) are easily polluted by the dusts; the excitation light power and fluorescence collection efficiency are reduced, and thus the error of the detection results is large. According to the method, the plasma spectroscopy of a uniform substance is used to correct the element characteristic emission lines in the plasma spectroscopy of a sample so as to inverse the strength of element characteristic emission lines under a pollution-free situation, and thus the influence of dusts on the measurement precision of LIBS can be effectively corrected. By combining the provided correction method and a conventional optical dustproof method, the maintenance period of LIBS detection equipment is largely prolonged.
Owner:山西祎恒光电科技有限公司
Laser assisted microwave plasma spectroscopy
InactiveUS8248602B2High detection sensitivityRadiation pyrometrySpectrum investigationMicrowaveChemical element
The present invention has a laser and a second energy source act in combination to produce a plasma that emits characteristic radiation for a prolonged period of time. The laser energy is directed to a sample for a period of time to ignite a plasma containing the sample material and to either ablate or vaporize the sample. Energy from a second energy source is supplied to the plasma for a second period of time so that the characteristic radiation emitted by the plasma is maintained. The emitted radiation is used to identify chemical elements contained in the sample. The second period of time is typically larger than the first period of time and may be as long as many milliseconds. Supplying energy for this longer period of time allows the plasma to grow in size and contributes to the large enhancement in the detection sensitivity of the present invention.
Owner:MIZIOLEK ANDRZEJ +1
Coal element detector
PendingCN112129742ARealize online measurementAnalysis by thermal excitationThermodynamicsEngineering
The invention discloses a coal element detector. The coal element detector comprises an alloy frame, wherein alloy support columns are arranged at four corners of the lower end of the alloy frame; analloy bottom plate is mounted at the upper end of the alloy frame; a support plate is longitudinally mounted on the right side of the upper end surface of the alloy bottom plate; a first mounting holeis formed in the middle of the support plate; a plurality of second mounting holes are formed in the periphery of the middle of the support plate; a collecting mirror main body is inserted into the second mounting holes; a collecting mirror group is embedded into an inner cavity of the collecting mirror main body; and a mounting plate is arranged on the left side of the inner cavity of the collecting mirror main body. The coal element detector is a compound eye type coal element laser online analyzer. By virtue of a laser-induced plasma spectroscopy principle, the components and proportions of all elements contained in coal are accurately measured, and the online measurement of coal ash content, sulfur content, calorific value, volatile components or other coal industrial analysis indexesis realized.
Owner:刘舆帅
Device and method for detecting soil heavy mental by utilizing electromagnetic heating and plasma spectroscopy
PendingCN109752367AEasy to operateReduce processing costsAnalysis by thermal excitationElectrical batteryCircular cone
Owner:HARBIN INST OF TECH AT WEIHAI
System and method for analysing, by laser induced plasma spectroscopy, the composition of a surface layer and for taking samples with a view to performing complementary analyses
ActiveCN105074437AWithdrawing sample devicesAnalysis by thermal excitationElemental compositionSurface layer
Analysing the composition of the surface layer of a material by laser-induced breakdown spectroscopy (LIBS) using a single pulsed laser 6, to generate a pulsed laser beam that interacts with the surface layer of the material 4 to produce a plasma 8 on the surface of the material. A device 10, 12 focuses the laser beam on the surface of the material and another device 18, 20 collects the light emitted by the plasma; this is then spectrally analysed by a device 22 to determine the elemental composition of the surface. A further device 30, 32, 34 sucks up and collects particles ablated from the surface layer for at least one additional qualitative or quantitative analysis. The light may be transmitted to the material and collected by optical fibres 10, 18 fitted with lenses 12, 20 and the suction device may be a cyclone 30 and pump 32 which collects particles on a filter 36. The additional analysis may be to examine for radiological contamination.
Owner:欧安诺核退役公司
Plasma spectroscopy analysis method
ActiveUS10539548B2Improve accuracySuppressing such variationEmission spectroscopyPreparing sample for investigationAnalyteThallium
Owner:ARKRAY INC
Plasma spectroscopy analysis method
ActiveUS10551323B2High quantitative accuracyEliminate the effects ofEmission spectroscopyPreparing sample for investigationAnalyteMetallic electrode
The disclosure provides plasma spectroscopy analysis methods using a preparatory process of adding a control metal species that is different from an analyte metal species to a sample so as to have a known concentration; a concentration process of introducing the sample to a measurement container, and applying an electric current across a pair of electrodes disposed in the measurement container to concentrate the analyte metal species and the control metal species in the sample in a vicinity of at least one of the electrodes; a detection process; a correction process; and a quantification process.
Owner:ARKRAY INC
Online detection system of element content of industrial solid powder
InactiveCN102095713BFast online detectionAdjust production status in timeFluorescence/phosphorescencePlasma spectroscopyMaterials science
The invention relates to the technical field of industrial automatic measurement, and provides an online detection system of element content of industrial solid powder, aiming at solving the problems that the commonly used detection method cannot meet the requirement on fast and real-time online detection of contents of multiple elements in industrial solid powder, and the LIPS (Laser Induced Plasma Spectroscopy) technology is not applied to online detection of contents of elements in industrial solid powder successfully. The online detection system of element content of industrial solid powder comprises a sampling channel, a measurement room, an LIPS detector, a correction device, a sample discharging channel and a working gas generator for supplying gas for the whole detection system, and realizes application of the LIPS technology in online detection of elements in industrial solid powder by a reasonable and compact structure. Proved by experiments, the detection system provided bythe invention can detect multiple elements in the industrial solid powder online rapidly in real time so as to guide workers to adjust the production condition in time to improve the production efficiency.
Owner:太原市敏通科技有限公司
An online detection method for dissolved gas in transformer oil
InactiveCN104165880BReduce the numberReduce volumeRaman scatteringAnalysis by thermal excitationSpectrum analyzerTransformer oil
An online detection method for dissolved gas in transformer oil, which can qualitatively analyze dissolved gas in transformer oil based on the real-time laser-induced plasma and laser Raman spectral characteristics of the gas separated from transformer oil. Carry out laser transmission and signal collection, the device is portable, through the time-sharing sharing of light transmission fiber and signal collection fiber, and sharing other optical components in the spectrum analyzer except the Rayleigh filter, the number and volume of the system components are reduced, saving energy cost, and can overcome the shortcomings of traditional off-line measurement methods that cannot be measured in real time.
Owner:STATE GRID CORP OF CHINA +1
A method for dissolving magnesium metaphosphate for plasma spectrometry detection
ActiveCN109030464BLower analytical detection limitSimple methodAnalysis by thermal excitationHigh concentrationMagnesium phosphate
Owner:HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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