312 results about "Ionization" patented technology

The invention relates to the technical field of ion characterization and preparation, in particular to a high-throughput preparation mass spectrum device and method giving consideration to high-resolution characterization. The device comprises an ion source, an ion transmission cavity, a quadrupole mass screening cavity, an ion dissociation cavity, an ion deflection cavity, an ion deceleration and deposition cavity and a high-resolution mass spectrum characterization cavity which are sequentially arranged, wherein the high-resolution mass spectrum characterization cavity is formed in one side of the ion deflection cavity in the vertical direction; soft ionization is combined with a quadrupole analyzer to screen ions, the ions are dissociated through a dissociation cavity, an ion deflection cavity is used for selecting a high-resolution characterization or high-throughput preparation function, a high-resolution mass spectrum characterization cavity is used for achieving high-resolution characterization of screened and fragmented ions, and an ion deceleration and deposition cavity is used for high-throughput preparation of the ions. According to the method, perfect compatibility of high-throughput preparation and high-resolution mass spectrum characterization is realized through ion deflection design, and the method has a wide application prospect in the fields of efficient preparation of biological macromolecules, synthetic macromolecules and the like and the like.

The invention relates to the technical field of lasers, and discloses a corona-based creeping spark discharge strong pre-ionization pulse gas laser which comprises a main frame chamber, a pre-ionization device is fixedly mounted at the top of an inner cavity of the main frame chamber, a cathode electrode is arranged at the top of the inner cavity of the main frame chamber, and a connecting copper sheet is fixedly mounted on the lateral upper portion of the inner wall of the main frame chamber. A flow guide plate is fixedly installed on the connecting copper sheet, and an anode electrode is fixedly installed at the top end of the flow guide plate. A corona-based creeping spark discharge strong pre-ionization pulse gas laser is characterized in that a pre-ionization area can be formed on a pre-ionization device and structures on the pre-ionization device, electrons in the pre-ionization area move in an accelerated manner under the action of electric field force, and in the movement process, the electrons in the pre-ionization area are separated from the pre-ionization device. And the electrons and other gas particles are subjected to inelastic collision and ionization or excitation, so that high-concentration and uniform initial electrons are generated, a micro-discharge channel is formed, and continuous seed electrons are provided for a core discharge region of the micro-discharge channel.

The invention relates to a device and a method for applying matrix material for matrix-assisted ionization, in particular for applying matrix material for matrix-assisted laser desorption / ionization. The invention also relates to the use of a device according to the invention for applying matrix material for matrix-assisted ionization. The invention also relates to the use of a sample carrier comprising matrix material for matrix-assisted ionization, which has been applied by means of a method according to the invention, for ion spectrometric analyses.

This allows for the measurement of the vacuum level in a vacuum chamber and provides an analytical device that can be miniaturized. [Solution] The analytical device comprises an ionization unit that generates ions by ionizing a sample, a vacuum chamber into which ions are introduced and the inside is kept under vacuum, a detector that detects ions, and a small vacuum gauge 1 that measures the vacuum level of the vacuum chamber. The small vacuum gauge 1 includes a cylindrical CAN package, a substrate housed within the CAN package, and a vacuum level sensor formed on the substrate.

The present invention relates to a method and a device for purifying outdoor and indoor air contaminated with solid particles. The method comprises a specific sequence of measures to promote the aggregation and / or coagulation of the particles, including ionization, followed by a series of filtrations. The invention comprises a device for implementing the method.

To stably form an insulating film of high quality in a reactive ion plating apparatus and method.SOLUTION: In the reactive ion plating apparatus 10, an evaporation material 24 stored in a crucible 20 is heated and evaporated by an electron gun 22. In addition, the ionization power Wd is supplied to the crucible 20 as an anode and the hot cathode filament 34 that emits thermoelectrons as a cathode. Accordingly, the plasma 100 is induced. Further, the reactive gas is introduced into the vacuum chamber 12 through the hollow anode 46, and the hollow anode power Wh is supplied to the hollow anode 46. Accordingly, the hollow anode plasma 200 is induced. A hollow anode filament 48 is provided at a gas discharge port of the hollow anode 46. The hollow anode filament 48 becomes a stable anode by being heated by Joule heat.SELECTED DRAWING: Figure 1

A gas separation device for separating and containing various types of gases from a collection chamber based on different atomic masses is disclosed. The chamber is connected to an ion diverter by a valve that, when opened, allows various types of gases to migrate from the collection chamber to an ionizer in which the gases are ionized. The ionized gas is accelerated by the ion accelerator and distributed into the ion deflector. The ion deflector includes a magnetic field within a channel defined by a pair of split-pole magnets. The trajectory of the ions is based on the ion mass of the separated ions. A plurality of collectors are located at different locations on the exit side of the ion deflector for receiving different ions moving along respective trajectories.

A high-power, high-temperature-stability M-type strontium ferrite belongs to the field of ferrite material preparation technology. The ferrite comprises a main formulation of SrCO3, La2O3, CaCO3, MnO, SnO2, Fe2O3, and Co2O3, and additives composed of CaCO3, SiO2, H3BO3, and La2O3. This invention introduces Sn-Mn ions for co-substitution, thereby constructing a Sn... 4+ -Mn 2+ The charge balance mechanism effectively suppressed the Fe ionization induced by the introduction of high-valence ions. 3+ To Fe 2+ Price change behavior, effective compensation after replacement due to the introduction of non-magnetic Sn 4+ This results in a loss of lattice magnetic moment. Simultaneously, through a stepped pre-sintering and sintering process, a CoFe2O4 hard magnetic spinel phase is induced to precipitate in the M-type strontium ferrite main phase. The negative coercivity temperature coefficient of the CoFe2O4 phase complements the inherent positive temperature coefficient of the matrix.

The invention discloses a plasma electrospray fusion ionization source and mass spectrum combined system and a detection method. The plasma electrospray fusion ionization source and mass spectrum combined system comprises a coaxially nested electrospray needle, a sample injector, an ultrahigh voltage generator, a grounded metal grid mesh, a mass spectrometer and a detector thereof. A grounded metal grid is installed between a spray needle and a mass spectrum inlet, voltage is applied to the spray needle, carrier gas is excited to generate plasmas, the macroscopic plasmas at the front end of the spray needle are fused with electrospray, and the plasmas and micro-droplets at the tip of the spray needle are fused. According to the unique ionization source constructed by the plasma-micro-droplet fusion system, on one hand, the ionization efficiency is improved, mass spectrum signals are enhanced, the application range of analytes is widened, excellent sensitivity to high-polarity compounds is kept, and effective ionization and detection of low-polarity compounds are achieved; on the other hand, higher energy and active species are provided for the micro-droplet reaction, the energy barrier required by traditional synthesis is broken, and efficient spontaneous product generation of the micro-droplet chemical reaction is achieved.

The utility model discloses a plastic particle cooling and deodorizing device, which belongs to the technical field of plastic particle processing devices and comprises a base. The buffering assembly is connected to the base; the cooling and deodorizing mechanism comprises a reaction frame connected to the top of the buffer assembly, a rotating disc is fixedly connected to the reaction frame, a spiral channel is defined by the rotating disc and the reaction frame, the top of the reaction frame communicates with an air inlet pipe, and the side portion of the reaction frame communicates with a plurality of air outlet holes; one end, far away from the reaction frame, of each air outlet hole points to the spiral channel. According to the utility model, an external compressed nitrogen source fills compressed nitrogen into the reaction frame through the gas inlet pipe, the electrodes are electrified to generate a high-voltage electric field, ionize nitrogen, generate high-energy electrons and free radicals, and react and absorb volatile organic compounds released by plastic particles to finish deodorization; and meanwhile, redundant nitrogen is discharged from the air outlet holes, and heat dissipation is conducted on the plastic particles in the spiral channel.

The invention discloses a modeling method for a streamer discharge process in natural ester insulating oil by considering ionization in bubbles. The modeling method comprises the following steps: 1) constructing a two-dimensional non-axisymmetric model for simulating discharge of bubbles to streamers in the natural ester insulating oil under lightning impulse voltage; 2) introducing a plasma chemical reaction, and constructing a natural ester insulating oil stream discharge electrohydrodynamic model coupled with an ionization process of gas molecules in bubbles; and after a set voltage is applied to the two-dimensional non-axisymmetric model, the natural ester insulating oil streamer discharge electro-hydrodynamic model simulates a natural ester insulating oil streamer morphology evolution process. According to the method, the drift-diffusion-reaction process of the plasma in the bubble and the Poisson equation are subjected to self-consistent solution, and the plasma generation process in the bubble under the strong electric field is integrated into the existing streamer discharge model, so that the method is beneficial to understanding the liquid dielectric breakdown theory.

The invention relates to a cusped magnetic field configuration-based direct-current ion thruster device, and relates to the field of ion thrusters, the cusped magnetic field configuration-based direct-current ion thruster device comprises a shell, a tungsten filament cathode, an inner magnetic ring, an outer magnetic ring, an upstream anode and a radial anode, and the outer magnetic ring and the inner magnetic ring are fixed on the side surface of a discharge chamber to establish cusped magnetic field configuration to restrain plasma; the axial gas distributor serves as an upstream anode, the radial gas distributor serves as a radial gas supply anode, electrons can move from a tungsten filament cathode to the upstream anode or the radial gas supply anode under the action of an electric field, and in the process, the electrons are captured by a cusped magnetic field and then generate ionization collision with gaseous working medium atoms to generate ions; according to the structure of the thruster, electrons in the discharge chamber are distributed more uniformly, uniform ionization of working medium gas atoms in the discharge chamber is achieved, and the thruster has the technical advantages of being high in ionization efficiency and large in thrust adjusting range.

The invention relates to the technical field of mass spectrum detection, particularly discloses a mass spectrum ionization source for detecting volatile substances in combination with radio frequency discharge, and solves the problems of tedious sample pretreatment steps, long analysis period, high instrument cost and the like when a traditional ion source is used for analyzing the volatile substances in the existing mass spectrum technology. The ionization source is used for ionizing molecules of a sample to be detected; the mass spectrometric detection method of the ionization source comprises the steps that stable low-temperature plasma is generated under the atmospheric pressure condition through radio frequency discharge, the low-temperature plasma directly interacts with an introduced to-be-detected sample, volatile substance molecules in the to-be-detected sample are efficiently ionized, and then generated ions are introduced into a mass spectrometer for analysis. The device has the advantages of being simple in structure, convenient to operate, free of complex sample pretreatment, high in analysis speed and the like, and an efficient and economical new way is provided for rapid and direct detection of volatile substances.

This application discloses a method for offline analysis of powder ionization conditions, comprising the following steps: placing a silicon wafer on a target plate of a plasma device; generating a plasma beam under preset powder ionization conditions using the plasma device; injecting powder into the plasma device so that the plasma beam bombards the powder until powder injection is complete; detecting whether a first condition and a second condition are met, wherein the first condition includes at least 70% of the powder injected into the plasma device ablation and brightening upon bombardment by the plasma beam and / or forming a coating on the silicon wafer; the second condition includes the coating containing chemical bonds formed by elements of the powder and / or detecting spectral lines generated by ionization of the powder upon bombardment by the plasma beam. If the first and second conditions are met, the powder is determined to be effectively ionized. Otherwise, the powder is determined to be ineffectively ionized. The method of this application can obtain basic research data on the boronization of boron powder.

A deposit reduction ionization source for introducing a sample to a mass spectrometer is provided. The deposit reduction ionization source includes a heating vessel having a set of circulating hot gases to avoid any condensation formation within the volume of the vessel to maintain the vessel clean. The container has a tubular cross-section with a conduit attached to its side wall. The container is placed in front of the orifice of the curtain cone. An exhaust port is located on an opposite side of the conduit on the wall and proximate to the curtain cone. An atomizer is placed inside the conduit. Atomizing gas and auxiliary gas are introduced into the conduit and curtain gas is introduced into the curtain cone.

Provided is a decorative sheet having excellent scratch resistance and excellent adhesion between gloss adjustment layers. A decorative sheet (1) is provided with a raw material layer (2) and a surface protection layer, and the surface protection layer comprises: a first gloss adjustment layer (5) which is provided on the raw material layer (2) and contains, as a resin cured product, a cured product of a first ionizing radiation-curable resin that is a first mixture of an acrylic acid ester and a methacrylic acid ester, and a second gloss adjustment layer (6) which is provided on the first gloss adjustment layer (5) and contains, as the resin cured product, a cured product of a second ionizing radiation-curable resin that is a second mixture of an acrylic acid ester and a methacrylic acid ester; and a second gloss adjustment layer (6) which partially covers the upper surface of the first gloss adjustment layer (5), contains a cured product of a second ionizing radiation-curable resin as a resin cured product, and has a higher specular gloss GS (60 DEG) than the first gloss adjustment layer (5).

The invention discloses a Beta radioactive isotope coating and magnetic confinement enhanced air-breathing electric propulsion ionization method. The method is characterized by comprising the following steps: selecting a plasma generation assembly without electrode discharge; the ionization is enhanced by adopting Beta radioactive isotope; arranging a magnetic field in the beta ray radiation direction to carry out magnetic field constraint; by dynamically adjusting the magnetic induction intensity and regulating and controlling the plasma state and the ionization rate, the Beta radioactive isotope (such as nickel-63) is creatively adopted, and the device has the advantages that the service life is long, the protection requirement is low, and mechanical compression and heating cannot induce nuclear reaction. And the requirement on the activity of the radioactive source is fundamentally reduced, so that the material cost and the safety risk are greatly reduced, and the practicability and the safety of the electric propulsion system are improved.

The application relates to a device for pre-ionization hollow cathode tube discharge for rapidly and uniformly depositing a thin film on the inner wall of an elongated tube and a use method thereof. The device belongs to the field of surface treatment. The device solves the problems of hollow cathode target deformation failure and difficulty in uniformly and rapidly depositing a large-thickness thin film on the inner wall of an elongated tube. The device comprises a pre-ionization device composed of a pre-ionization power supply, a pre-ionization ion source and an anode ring; the pre-ionization ion source, the anode ring, the hollow cathode target material, the elongated tube and the anode rod are coaxially arranged. The pre-ionization ion source is arranged to reduce the difficulty of hollow cathode target material discharge, improve the hollow cathode target material discharge intensity, reduce the heat input of the hollow cathode target material port, avoid the port overheating deformation failure, and further improve the thin film deposition rate. The reciprocating mechanism drives the relative movement of the elongated tube and the hollow cathode target material discharge area, realizes the plasma discharge in the elongated tube, and solves the problem of uniformly and rapidly depositing a large-thickness thin film.

Embodiments herein provide a single step process for converting a mixture of gases or flue gases containing CO2, N2, and H2O to urea using a plasma as an energy source. The gas mixture is exposed to a high voltage AC or DC or pulse or subjected to a radio frequency electric field, the electrical species (ions, radicals, etc.) of the gas are introduced into electrically activated or ionized water of solvated electrons, radicals, or ions containing solvated electrons, hydrogen, and other ions or radicals in a plasma state that produces the gas mixture in the presence of a catalyst. Urea is synthesized in such a reducing water medium by co-reduction of amine ions or ions of nitrogen oxides and oxide carbon ions. Also disclosed is a method of increasing the interaction surface area between a plasma field and a gas mixture under water using the electrically activated nanoliquid drop. In addition, the single-step method disclosed by the invention can also be used for synthesizing ammonia (NH3). The disclosed methods may help reduce CO2 emissions from the industry, or may reduce the CO2 concentration in the air.

The utility model discloses a gas ionization mechanism and coating equipment, relates to battery piece production technical field, include: ventilation cavity, first electrode plate, second electrode plate and power supply, the first side of ventilation cavity is connected with gas supply unit, gas supply unit supplies gas to the inside of ventilation cavity, the second side of ventilation cavity is equipped with the discharge port, the discharge port is equipped with the first electrode plate, second electrode plate and power supply. The first electrode plate and the second electrode plate are arranged parallel to the second side of the ventilation cavity and are respectively connected with two different electrodes of a power supply, and gas is ionized into a positive ion form after being introduced into a uniform electric field formed between the first electrode plate and the second electrode plate. The gas ionization mechanism and the evaporation mechanism are arranged in the shell, the gas ionization mechanism and the evaporation mechanism provide ionized hydrogen ions and gaseous aluminum oxide molecules to the interior of the shell at the same time so as to jointly participate in the coating reaction of the battery piece, and the coating quality of the battery piece is improved.

A method for the purification of a reaction crude can include employing one or more electrodeionization modules each including a cathode, an anode, and at least one ion-depletion compartment interposed between pairs of ion-concentration compartments. Each ion-concentration compartment can contain an ion-exchange medium. The method can include passing a reaction crude through each ion depletion compartment. The reaction crude can be produced from a process including at least one ionic species. The method can include supplying current between the anode and the cathode. The method can include recovering an ion-depleted stream from each ion-depletion compartment. The method can include recovering the ionic or ionizable species from each ion-concentration compartment.

The invention relates to a method for measuring the internal pressure of at least one vacuum interrupter (12), comprising the following steps: applying a voltage (U) between an anode and a cathode of the vacuum interrupter (12), applying a magnetic field (F) to deflect an electron path, measuring a discharge current of gas particles that have been struck and thereby ionized by electrons and have discharged in a vacuum of the vacuum interrupter (12), and measuring the internal pressure by converting the discharge current (I), wherein the measurement of the discharge current (I) is carried out in a defined sub-region (24) of the vacuum interrupter (12). The invention further relates to a measuring system (10) for operating such a method.

A method is disclosed comprising providing a biological sample on a swab, directing a spray of charged droplets onto a surface of the swab in order to generate a plurality of analyte ions, and analysing the analyte ions.

The invention relates to an improvement method for adsorbed particles in a test process of a particle detector, which belongs to the technical field of semiconductor wafer detection equipment and comprises the following operation steps: 1, simultaneously starting a fan and a high-pressure generator; and secondly, the fan sucks air into the air collecting pipe, and the air is blown out downwards through the air outlet pipes to generate airflow. And 3, applying high voltage to the spray point by the high-voltage generator. Under the action of a strong electric field of the needle tip, air flowing through the air outlet pipe is ionized to form airflow containing a large number of positive and negative ions, namely ion wind. And 4, blowing the ionic wind to the detector below and the air around the detector. Through a fan and high-voltage ionization mode, an active electrostatic neutralization environment is created, the problem of electrostatic adsorption generally faced by a silicon wafer and particle detector in testing is effectively solved, and the device has important significance in improving product quality and detection reliability.

A method for detecting particles in a gas of a process environment present in a process chamber, the method comprising the steps of: guiding the gas with the particles into an ionization and charging unit (11) being in fluid communication with the process chamber, wherein the ionization and charging unit has an anode (12) and a cathode (13) and is adapted and configured to at least partly ionize said gas and to charge at least some of said particles; igniting and sustaining a discharge in said gas by applying a voltage between said anode and said cathode of the ionization and charging unit; measuring a current flowing from or to the anode and / or from and to the cathode; detecting the particles based on an AC component or a transient of the measured current. The invention is further directed to an apparatus for detecting particles, to a coating system comprising such an apparatus and to a use of ionization unit.

The invention provides an RPS source microwave plasma ionization chamber structure and a plasma cleaning machine, the RPS source microwave plasma ionization chamber structure comprises an ionization chamber, the ionization chamber is internally provided with a hollow ionization chamber, and the top of the ionization chamber is provided with a first air inlet hole; the dispersing head is connected with the first air inlet hole, a plurality of annular guide holes are formed in the end face part, opposite to the first air inlet hole, of the dispersing head, and the annular guide holes are arranged in a wavy outward radiation mode with the hole center of the first air inlet hole as the original point and used for dispersing air flow entering the ionization cavity through the first air inlet hole; according to the invention, the dispersion head with a plurality of annular guide holes arranged in a wavy outward radiation manner is mounted in the ionization cavity, so that microwaves and process gas can be dispersed according to regions and enter the ionization cavity through the dispersion head, and the introduced gas flow can stably and uniformly enter the interior of the cavity; and the microwave energy can be quickly and intensively focused on a set ionization area to form a high-concentration gas atmosphere, so that the ionization efficiency of the gas is effectively improved, and the cleaning with high plasma density is further ensured.

In the present invention, an ion source generates a first element ion to be measured by ionizing a target element contained in a sample. A separation unit separates an ion generated in an ion source by m / z. A detector detects the separated ion. A control device displays, on a display device, a plurality of second images (Im12-Im15) together with a first image (Im11). The first image (Im 11) includes a spectrum around a first m / z of the first element ion. Each of the second images (Im12-Im15) includes the spectrum around a second m / z of a second element ion, the second element ion constitutes an ion of the same m / z which has the same m / z as the first element ion.

The invention provides a high-sensitivity EI ionization device with a detachable independent ionization chamber, and belongs to the technical field of mass spectrometers. Comprising a sample introduction capillary tube, a first vacuum chamber, a filament, a reflection electrode, a second vacuum chamber and a vacuum pump, the sample introduction capillary tube is arranged on the input side of the first vacuum chamber, the first vacuum chamber is detachably connected into the second vacuum chamber, and the end, provided with the sample introduction capillary tube, of the first vacuum chamber is located outside the second vacuum chamber; small holes are formed in the upper side wall and the lower side wall of the first vacuum chamber, the lamp filament is arranged at the position, corresponding to the small holes, of the upper portion in the second vacuum chamber, the reflection electrode is arranged at the position, corresponding to the small holes, of the lower portion in the second vacuum chamber, and the first vacuum chamber becomes an ionization chamber under the action of the lamp filament and the reflection electrode. The second vacuum chamber is connected with a vacuum pump. The invention can effectively reduce the cleaning cost of the sample residue in the ionization chamber, improve the detection sensitivity of the mass spectrometer, and prolong the service life of the EI source filament.

The application provides an aerosol thermal desorption ion source, which comprises a flash evaporator for receiving a particle beam transmitted along a first direction and heating and vaporizing particles in the particle beam to generate gas molecules; and a filament for releasing electrons to ionize the gas molecules to generate ions; the flash evaporator has a length along the first direction, a width along a second direction, and a thickness along a third direction; the first direction, the second direction and the third direction intersect each other; in the first direction, a cross section of the flash evaporator perpendicular to the first direction is rectangular; in the second direction, the width of the flash evaporator is smaller than the irradiation range of the filament; and in the third direction, the filament is arranged on both sides of the flash evaporator; by using the device, the shape of the gas flow generated by the flash evaporator can be changed, the coincidence degree of the distribution area of the gas and the transmission area of the directional electron beam is improved, and the ionization efficiency of the gas molecules is improved.