112 results about "Rare gas" patented technology

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 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.

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 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 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 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 a working method for inhibiting the coupling effect of alkali metal and rare gas atoms. The working method comprises the following steps: stabilizing the carrier frequency of an alkali metal atom magnetometer to the resonance frequency of the alkali metal atoms by adding an x-direction standard magnetic field reference signal and utilizing the zero-order signal characteristic of an NMRG embedded alkali metal magnetometer; stabilizing a carrier demodulation phase of the alkali metal atom magnetometer to be only sensitive to a y-direction magnetic field by utilizing a first-order signal characteristic of the NMRG embedded alkali metal magnetometer; externally adding a y-direction standard magnetic field reference signal, and measuring the amplitude change of the signal by using an alkali metal magnetometer so that the change of the amplitude of a rare gas atomic nucleus magnetic moment signal caused by the change of alkali metal atomic polarizability and the like is counteracted; measuring the phase change of the signal by an alkali metal magnetometer to counteract the phase change of the rare gas atomic nucleus magnetic moment signal caused by the change of alkali metal atomic polarizability and the like. Therefore, the influence of the change of the working state of the alkali metal magnetometer in the NMRG output signal is eliminated, and the coupling effect is eliminated.

A method of producing a perpendicular magnetic recording medium with a magnetic recording layer formed from ferromagnetic crystal grains and oxide-including non-magnetic crystal grain boundaries and provided on a non-magnetic substrate. The method is initiated by forming the magnetic recording layer by a reactive sputtering method using rare gas containing 2% by volume to 10% by volume (both inclusively) of oxygen gas at an initial stage of film formation. The method continues by successively forming the magnetic recording layer by reactive sputtering while reducing the concentration of the oxygen gas. The method may further include forming an undercoat layer of Ru or a Ru-alloy under the magnetic recording layer. In this manner, a granular magnetic layer having high characteristic coercive force (Hc) can be formed, while reducing the amount of expensive Pt or Ru required.

A gas discharge panel capable of high-speed driving at a low drive voltage, while suppressing the occurrence of write errors in a write period, and a manufacturing method for the same. To achieve this, in the gas discharge panel of the present invention, a secondary gas formed from at least one of carbon dioxide, water vapor, oxygen and nitrogen is induced into discharge spaces 30 evacuated until the residual gas pressure is 0.02 mPa or less, and an He—Xe or Ne—Xe rare gas (discharge gas) is induced into discharge spaces 30. The amount of the secondary gas included within discharge spaces 30 when, for example, carbon dioxide is included therein, is suitably set in terms of both a discharge starting voltage and an electron emission ability, so that the partial pressure of the carbon dioxide is in a range of 0.05 mPa to 0.5 mPa inclusive.

A disclosed device for separating krypton and xenon in a rock sample comprises a cylinder and an upper cover, the cylinder internally comprises a liquid nitrogen layer and a heat conduction agent layer, the liquid nitrogen layer sleeves the heat conduction agent layer, a cavity between the outer wall of the liquid nitrogen layer and the cylinder can be vacuumized, and an inner cavity of the liquid nitrogen layer can accommodate liquid nitrogen; a cold finger is arranged in an inner cavity of the heat conduction agent layer, a heat conduction agent can be contained between the inner wall of the heat conduction agent layer and the cold finger, the cold finger is connected with a heating element, a temperature measuring element and an experiment cavity, an inner cavity of the cold finger is communicated with the experiment cavity, and the experiment cavity can be communicated with external mixed gas. The invention further provides a method for separating krypton and xenon in the rock sample, the method is used in the pretreatment process of mass spectrometry of inert gas samples, operation is easy and convenient, rare gas can be separated in a high-quality and high-efficiency mode, the experiment time is shortened, the background is reduced, and meanwhile the purity of the rare gas is improved.

The invention relates to a high-pressure and normal-pressure gas and vacuum all-in-one machine. The all-in-one machine comprises a box body, an air supply unit, a vacuum unit, a constant pressure unitand a control unit. The all-in-one machine is characterized in that the same device can provide high-pressure or normal-pressure gas such as air, nitrogen, oxygen, carbon dioxide and rare gas at thesame time and can also provide vacuum negative pressure, meanwhile, due to the fact that a drying filter, a dust filter, a chemical adsorption filter and other devices are additionally arranged in thedesign, ultra-clean air and various high-purity gases which do not contain dust particles and microorganisms can be produced, a buffer tank is used, so that an air compressor and a vacuum pump can work intermittently, and the problem that the service life of the compressor and a vacuum pump is too short due to long-term work in traditional design is avoided. Compared with a traditional air/nitrogen generator, the noise reduction and shock absorption design is correspondingly added in the device, and application in scientific analysis and medical clinic is better facilitated.