122 results about "Rare gas" patented technology

In a method of manufacturing a magnetic disk including at least a magnetic recording layer on a substrate 1 and used for vertical magnetic recording, in a step of forming, on the substrate 1, the magnetic recording layer composed of a ferromagnetic layer 5 having a granular structure and an exchange energy control layer 7 constituted by a laminated layer formed on the ferromagnetic layer 5, at least the exchange energy control layer 7 is formed through sputtering in an atmosphere of a rare gas having a greater mass than an argon gas. The rare gas having a greater mass than the argon gas is a krypton (Kr) gas, for example. The exchange energy control layer 7 is a laminated layer composed of a first layer containing Co or a Co-alloy and a second layer containing palladium (Pd) or platinum (Pt), for example.

A vessel for rare-gas filling is provided, where almost complete light circular polarization is realized, which has a light incident window of a single crystal material whose thickness and crystal axis orientation are optimized, and a polarization method of rare gas nuclei in the vessel is also provided. In addition, embodiments of the vessel is provided, which is impervious to alkali metal, and sustains high pressure, and shows no permeability for 3He gas, and has negligibly small neutron absorption so as to be suitable for application to basic science, for example, neutron scattering, and the polarization method in the vessel is also provided.The vessel for rare-gas filling of the present invention comprises a vessel body 3, and a pipe 4, which is connected to the vessel body 3 and introduces a rare-gas containing gas and an alkali metal into the vessel body 3. A light incident window 2 made of a single-crystal material, which has proper thickness and proper crystal axis orientation, is attached to the vessel body 3. The vessel for rare-gas filling is preferably made of sapphire or the like.

Disclosed is a metal halide discharge lamp which essentially permits disusing mercury. The metal halide discharge lamp comprises a refractory and transparent hermetic vessel, a pair of electrodes fixed to the hermetic vessel, and a discharge medium sealed in the hermetic vessel and containing a first halide, a second halide and a rare gas, the first halide being a halide of a metal which achieves a desired light emission, the second halide having a relatively high vapor pressure, being at least one halide of a metal which is unlikely to emit a visible light compared with the metal of the first halide, and acting as a buffer gas.

A silicon compound gas, an oxidizing gas, and a rare gas are supplied into a chamber (2) of a plasma processing apparatus (1). A microwave is supplied into the chamber (2), and a silicon oxide film is formed on a target substrate with plasma generated by the microwave. A partial pressure ratio of the rare gas is 10% or more of a total gas pressure of the silicon compound gas, the oxidizing gas, and the rare gas, and an effective flow ratio of the silicon compound gas and the oxidizing gas (oxidizing gas / silicon compound gas) is not less than 3 but not more than 11.

The invention provides a rare gas all-component content online analysis method. The method includes the following steps: carrying out vacuumization and heating degassing treatment on a main pipeline of a rare gas sample preparation device; connecting an air standard sample to a sample introduction port, vacuumizing a connecting pipeline, and controlling the sample introduction pressure of the air standard sample; purifying the air standard sample, and enriching rare gases; sending the enriched rare gases to quadrupole mass spectrometer, and carrying out a series of analysis calculation; repeating the above operations on a natural gas sample; and obtaining correction values of the rare gas all-component contents in the natural gas sample. The method has the characteristics of simple operation, fast analysis, high reliability, good repeatability, high accuracy and the like, and can provide accurate and reliable parameters for evaluation and utilization of the contents of the rare gas all components of He, Ne, Ar, Kr and Xe.

The object of the present invention is to provide an oxygen isotope concentration method capable of concentrating the stable oxygen isotopes of 17O and 18O which can be carried out using a simple device configuration. The present invention relates to a method for concentrating an oxygen isotope in separated oxygen by irradiating ozone with light, selectively dissociating an isotopomer of ozone containing an oxygen isotope in its molecule into oxygen, followed by dissociating the ozone and separating the formed oxygen from the non-dissociated ozone. The basic configuration of the device is provided with an ozone formation unit 11 that forms ozone from raw material oxygen, an ozone separation unit 12 that separates ozone formed with said ozone generation unit and raw material oxygen, an ozone photodissociation unit 13 that radiates light of a specific wavelength onto the ozone separated by said ozone separation unit 12 and selectively dissociates ozone containing an oxygen isotope in its molecule into oxygen, and an oxygen separation unit that separates the oxygen formed by dissociating ozone in said ozone photodissociation unit 13 and non-dissociated ozone to concentrate the oxygen isotope in the oxygen. The present invention also relates to a method for concentrating an oxygen isotope comprising an ozone photodissociation step, in which light is radiated onto a rare gas-ozone mixed gas containing ozone and at least one type of rare gas selected from krypton, xenon and radon to selectively dissociate ozone containing a specific oxygen isotope in its molecule into oxygen, and an oxygen isotope concentration step, in which the oxygen separated from ozone in said ozone photodissociation step is separated from non-dissociated ozone and rare gas to concentrate the oxygen isotope present in the separated oxygen. An oxygen isotope may also be concentrated in a dissociation reaction product by irradiating a gas containing a peroxide selected from hydroperoxides, (di)alkyl peroxides, peroxyacids including peracids, (di)acyl peroxides, peroxy esters, peroxycarbonates, peroxydicarbonates, diperoxycarbonates, peroxalates, cyclic peroxides, ozonides and endoperoxides, nitrite esters and nitrate esters, and selectively dissociating a peroxide containing a specific oxygen isotope in its molecule.

The invention discloses a femtosecond pulse measuring method and device. The femtosecond pulse measuring method comprises the steps that higher harmonics of two channels are generated through interaction of a pulse laser driving field and rare gas; higher harmonics of the two channels interfere with each other; a femtosecond pulse to be measured is introduced into the process of interaction between the pulse laser and the rare gas so as to change the accumulated phases of the generated higher harmonics of the two channels, so that the higher harmonics of each channel generate energy drift; through energy drift information generated by higher harmonics of the two channels respectively, a function that the higher harmonic energy drift of each channel changes along with time delay is determined, and structure information of a first component of the femtosecond pulse to be measured is determined according to the function; and the first component is the component with the same polarizationdirection of the femtosecond pulse to be measured and the pulse laser driving field. According to the method, the frequency drift amount of higher harmonic spectrum perturbation along with time delayis extracted, and the femtosecond pulse is reconstructed from the drift amount changing along with time delay.

The invention discloses a circulating blowing-type clamping electric welding work box for pipeline operation. The circulating blowing-type clamping electric welding work box for pipeline operation comprises a folding electric welding box capable of being inflated with gas or deflated. The folding electric welding box is provided with an electric welding nozzle pipe and an inward turning type grabbing glove which penetrate through the folding electric welding box. The folding electric welding box is further provided with an inert gas pipe, a circulating pipe, a workpiece entering closing door and an exhaust valve. The head end and the tail end of the circulating pipe are connected to a set of opposite faces of the folding electric welding box respectively. The circulating pipe is sequentially provided with a circulating gas flow pump, a dust removal link, a gas filter link and a high-temperature heating link in the gas current flowing direction. A clamp mechanism used for clamping a workpiece to be welded is arranged at the bottom in the folding electric welding box. Compared with the prior art, the folding electric welding box is filled with inert gas, an operator carries out operation outside the folding electric welding box, and the internal inert gas is recycled constantly; thus, the use quantity of the rare gas is reduced, and emission of harmful gas is reduced; the environment is protected, and the safety of the operator is protected.

The present invention provides a high-pressure discharge lamp 100 including a luminous bulb 10 enclosing at least a rare gas and halogen in the bulb and made substantially of quartz glass; and an electrode 12 made substantially of tungsten and disposed in the luminous bulb. The mole number of the halogen is larger than the sum of the total mole number of metal elements (except the tungsten element and the mercury element) that have the property of bonding to the halogen and are present in the luminous bulb 10 and the mole number of the tungsten present in the luminous bulb by evaporation from the electrode 12 during lamp operation.

A discharge lamp 50 comprises a luminous bulb 10 in which a luminous material 18 is encapsulated and a pair of electrodes 12 are arranged to be opposed to each other, and sealing parts (11a, 11b) that are formed at both ends of the luminous bulb 10 and in which metal foil structures 13 electrically connected to the pair of electrodes 12, respectively, are sealed. At least one of the metal foil structures 13 is composed of a first metal foil 13a, a second metal foil 13b and a metal bar 21 coupling both of them. At least one sealing part 11b of the sealing parts includes a cavity 20 around the position where in the sealing part the metal bar 21 is located, and at least a rare gas is encapsulated in the cavity 20.

Belonging to the technical field of liquid-gas separation, the invention provides a rare gas separation device and a control method thereof. The separation device comprises a separation chamber, a heater, a purification apparatus, a liquid collection chamber, a liquid storage chamber and the like. The separation device provided by the invention can separate rare gas in liquid with high precision in a short time. In an early sampling process, a design scheme separating sampling from storage is adopted, and can effectively avoid the mixing of air, in the separation process, a novel cold trap structure can quickly filter out water vapor in gas, the disposed purification apparatus can eliminate active gas in mixed gas, and the purified rare gas can be directly measured through a flow meter anda mass spectrometer. The device is particularly suitable for separating and researching rare gas dissolved in underground water.

A high-pressure gas discharge lamp 10 is described with a sealed discharge vessel 20 with an inner discharge space 22. Two electrodes 24 project into the discharge space 22. The filling in the discharge space 22 comprises metal halides and a rare gas. In order to provide a lamp with good environmental properties suited for automotive use, in particular with good lumen maintenance, the filling is free of Hg and Th and comprises halides in an amount of 7.1-11.4 μg / mm3 of the volume of the discharge space 22. The halides comprise at least NaI and ScI3, provided in such amounts that a ratio of the masses of NaI to ScI3 is 1.2-1.6.

A high pressure gas discharge lamp 10 is described with a discharge vessel 20. Electrodes 24 project into a discharge space 22 of a volume of 12-20 mm3. The discharge space has a filling of rare gas and a metal halide composition which is free of mercury. The metal halide composition comprises at least halides of Sodium and Scandium with a mass ratio of halides of Sodium and Scandium of 0.9-1.5. The lamp 10 further comprises an outer enclosure 18 provided around the discharge vessel 20, which is sealed and filled with a gas at a pressure below 1 bar. The lamp 10 has an efficiency equal to or greater than 90 lm / W in a steady state operation at an electrical power of 25 W.

A mercury-free arc tube for a discharge lamp has a closed chamber filled with rare gas and a metal halide containing at least Na halide or Sc halide and electrodes disposed on both end portions of the closed chamber so as to be opposed to each other, wherein the electrode rod is stepped shape which satisfies relationship of 1.1<A1 / A2<7.3, whereas A1 is a cross sectional area of the electrode in a top-end side area protruded into the closed chamber and A2 is a cross sectional area of the electrode in a base-end side area fixed to the end portion of the closed chamber.

The invention discloses an automobile headlight production process which comprises the following steps: (1) selecting a material; (2) mounting a frame; (3) implementing point welding on a molybdenum plate; (4) implementing pressure sealing and forming holes; (5) highlighting hydrogen; (6) exhausting air; (7) welding; (8) inspecting a finished product. The automobile headlight production process is reasonable and simple in step, reasonable in material selection, low in cost, high in quality and applicable to popularization in the automobile lamp industry, the process procedures are greatly simplified, most importantly, the service life of the automobile lamp is prolonged due to addition of a rare gas xenon, and due to addition of a reinforcing ring, faults such as welding off of the automobile lamp because of vibration are avoided.

A system and method for recovery of rare gases such as neon, helium, xenon, and krypton in an air separation unit is provided. The rare gas recovery system comprises a non-condensable stripping columnlinked in a heat transfer relationship with a xenon-krypton column via an auxiliary condenser-reboiler. The non-condensable stripping column produces a rare gas containing overhead that is directed to the auxiliary condenser-reboiler where most of the neon is captured in a non-condensable vent stream that is further processed to produce a crude neon vapor stream that contains greater than about 50% mole fraction of neon with the overall neon recovery exceeding 95%. The xenon-krypton column further receives two streams of liquid oxygen from the lower pressure column and the rare gas containingoverhead from the non-condensable stripping column and produces a crude xenon and krypton liquid stream and an oxygen-rich overhead.

A conventional microwave plasma processing apparatus, even when krypton (Kr) is used as a plasma-generation gas, can only obtain an oxide film or a nitride film having the same level of characteristics as those obtained when a rare gas such as argon (Ar) is used as a plasma-generation gas. Accordingly, instead of forming a dielectric window of a microwave plasma processing apparatus with only a ceramic member, a planarization film capable of obtaining a stoichiometric SiO2 composition by thermal treatment is coated on one of a plurality of surfaces of the ceramic member, the surface facing a process space, and then thermally-treated, thereby forming a planarization insulation film having a very flat and dense surface. A corrosion-resistant film is formed on the planarization insulation film.

The present invention is a method of monitoring recovery site hydrocarbons (HC) using an unconventional method which permits quantifying the HC present in zones above the exploration and development zone. The method according to the invention is based on the adjustment of a model describing the gas concentration as a function of time, using in-situ geochemical analyses of rare gases and, when appropriate, of injected gas used for fracturing, contained in fluid phases of subsoil samples. By use of rare gas analysis, the method according to the invention allows anticipation of hydrocarbon leakage above the exploration / development site.

The invention relates to the technical field of catecholamine detection, in particular to an LC-MS / MS detection method of catecholamine, which mainly comprises the following steps: putting a detectionsample into a centrifuge tube, and adding an internal standard solution and a diluent for dilution; adding the diluted solution into a WCX solid-phase extraction column for extraction, and leaching with leacheate after extraction; after leaching, vacuumizing the WCX solid-phase extraction column, pumping out the solution, eluting with a methyl formate solution, collecting eluent, blow-drying theeluent with rare gas, and redissolving; filtering the redissolved solution through an ultrafine filter membrane, and performing chromatographic analysis in a chromatographic column. The invention alsodiscloses an LC-MS / MS detection pretreatment kit for catecholamine. The pretreatment kit comprises a WCX solid-phase treatment extraction column, a diluent and an eluent. According to the invention,the detection precision of catecholamine in the prior art is effectively improved and optimized, and the detection efficiency of the detection process is improved.

The invention discloses a low-energy-consumption lunar in-situ rare gas extraction system and method, and belongs to the technical field of lunar soil treatment. The system comprises a screening device, a grinding device and a heating device, and the method comprises the steps that a, screening, specifically, collecting lunar soil through a mechanical arm and putting into the screening device, andscreening the lunar soil with the particle size smaller than 100 micrometers; b, grinding: adding the screened lunar soil into a grinding device for grinding; c, adding the ground lunar soil into a heating device and heating to 150-250 DEG C, and releasing adsorbed rare gas. According to the method, screening and grinding are combined with a traditional heating method to achieve low-power-consumption rare gas extraction on the surface of the moon, the extraction power consumption is only 10-30% of the 900 DEG C hot melting extraction power consumption in the prior art, and moon resource utilization is promoted.

The invention aims to set a removal function of removing impurities from waste gas including rare gases (such as argon, xenon, krypton and the like) used by an excimer laser oscillation device in a system of the excimer laser oscillation device. The invention provides the excimer laser oscillation device having the gas recycle function. The system of the excimer laser oscillation device is provided with an oscillation chamber filled with laser gases including halogen gas, rare gas and cushion gas and a first impurity removal device removing impurities in waste gas discharged from the oscillation chamber.

The invention discloses a comprehensive monitoring and analyzing device for a traction overhead line system, which comprises a shell, and the shell internally comprises a water draining plate at the top of the shell, the top of the water draining plate is set to be semi-arc-shaped, and the water draining plate is made of an aluminum material; a bolt hole for fixing is formed in the shell, a steel connecting belt is adopted at the bolt hole fixing position, on one hand, the steel connecting belt is used for penetrating through a contact network to be connected with the device through a bolt, and on the other hand, the steel connecting belt and the external ground form a loop through the bolt hole for normal power supply and lightning protection and lightning protection; and the dry-type transformer is arranged in the device, and the transformation ratio of the dry-type transformer is 10.5 kV / 0.4 kV. The traction overhead line system comprehensive monitoring and analyzing device is externally made of novel materials, adopts a totally-closed mode, is internally filled with rare gas sulfur hexafluoride, has good insulation performance, can work well even under the high-temperature condition, is high in adaptability and can adapt to various climatic environment conditions.

The invention discloses an experimental device and method for researching flow heat exchange characteristics of ultrahigh-temperature rare gas. The device comprises a gas loop consisting of a gas storage bottle group, a heating experimental section, a cooling experimental section, a gas-water heat exchanger, a high-pressure gas pump, a vacuum pump, a gas pipeline and a valve on the pipeline, a cooling oil loop consisting of an oil storage tank, an oil pump, an oil-water heat exchanger, an oil pipeline and a valve on the pipeline, and a cooling water loop consisting of a water tower, a water pump, a water conveying pipeline and a valve on the pipeline. The device is used for simulating the flowing heat exchange characteristics of rare gas in an ultrahigh-temperature gas reactor. The experiment loop adopts a high-pressure gas pump, a heating experiment section and a cooling experiment section are arranged at the same time, according to the experimental device, experimental study on heating flow heat exchange characteristics and experimental study on cooling flow heat exchange characteristics of the high-temperature rare gas in different states are achieved, the device can bear the working condition of the ultrahigh-temperature rare gas, meanwhile, the economical efficiency of the experimental device is considered, the experimental process is easy to operate, and an experimental loop has safety and reliability.

A process for producing a porous quartz glass body containing hydrolyzing a metal dopant precursor and an SiO2 precursor in a flame of a burner to form glass fine particles, and depositing and growing the formed glass fine particles on a base material, in which the burner has at least two nozzles, and in which a mixed gas containing (A) a metal dopant precursor gas, (B) an SiO2 precursor gas, (C) one gas of H2 and O2, and (D) one or more gases selected from the group consisting of a rare gas, N2, CO2, a hydrogen halide and H2O, with a proportion of the gas (D) being from 5 to 70 mol %; and (E) the other gas of H2 and O2 of (C), are fed into different nozzles of the burner from each other.