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79 results about "Polyatomic ion" patented technology

A polyatomic ion, also known as a molecular ion, is a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit. The prefix poly- means "many," in Greek, but even ions of two atoms are commonly referred to as polyatomic. In older literature, a polyatomic ion is also referred to as a radical, and less commonly, as a radical group. In contemporary usage, the term radical refers to free radicals that are (not necessarily charged) species with an unpaired electron.

Microwave electric field intensity meter based on cold Rydberg atom interferometer and measuring method thereof

ActiveCN104880614AHigh measurement accuracyMake up for the defect that only point frequency measurement can be realizedElectrostatic field measurementsRydberg atomBeam splitting
The invention discloses a microwave electric field intensity meter based on a cold Rydberg atom interferometer and a measuring method thereof. The microwave electric field intensity meter comprises: a vacuum system, which is used for cooling and trapping atom to generate a cold atom cloud for preparing a Rydberg state and generating an interference effect so as to generate a phase difference by coherent atomic states; a laser, which is used for generating coupling light and detection light and exciting the cold atom in the vacuum system from a ground state to the Rydberg state coherently; a photoelectric detector, which is used for detecting an interference fringe generated by two beams of cold atom clouds due to coherence; and a microwave source, which is used for generating a microwave electric field. According to the invention, when the microwave electric field intensity meter is applied to the evolution process of coherent beam splitting and combination, the atom cloud in the Rydberg state interacts with a to-be-measured microwave electric field, thereby generating an alternating-current stark effect; and the to-be-measured microwave electric field intensity is associated with a phase generated by the an alternating-current stark, thereby realizing precise measurement of the microwave electric field.
Owner:清远市天之衡量子科技有限公司

Atomic space-adjustable dark magnetic optical trap method and device for preparing ultra cold polar molecules

The invention relates to an atomic space-adjustable dark magnetic optical trap method and device for preparing ultra cold polar molecules. With the method and device adopted, the technical problem of little possibility for atomic groups to realize space absolute overlap in a current ultra cold polar molecule preparing process can be solved. According to the method and device of the invention, trapping light of A atoms and B atoms are merged into one beam through corresponding optical components; the beam is divided into six beams; the six beams and an inverse helmholtz magnetic field form a magnetic optical trap, so that the overlap ratio of an A atom group and a B atom group trapped by the magnetic optical trap can be significantly enhanced; in a dark magnetic optical trap which is formed by depumping light through adopting a dark point, the intensity ratio of two beams of mixed light can be adjusted through adjusting several wave plates, particular, a third wave plate, and therefore, the work of the overlap of the two atom groups can be controlled, and an ideal condition can be created for the association of the atom groups; a user can know how to adjust the intensity ratio of beams of mixed light through observing atom group images acquired by a CCD image sensor, so that the overlap of the two atom groups can be realized, and the rate and yield of ultra cold polar molecule preparation can be effectively improved.
Owner:SHANXI UNIV

Atomic interference gravity measuring device based on double-matter wave source

ActiveCN106772652ACompact structureGood suppression of magnetic field effectsGravitational wave measurementPhotovoltaic detectorsPolyatomic ion
The invention discloses an atomic interference gravity measuring device based on a double-matter wave source, and belongs to the technical field of atomic interference and gravity exploration. The device comprises a vacuum chamber which is used for providing a sealed container for atomic steam and providing a vacuum environment with the vacuum degree being 10<-8>-10<-7>Pa for the preparation and manipulation of cold atoms. There are two cold atomic cloud preparation structures which are at the same end of an interference area. The device has a simple structure. The center of gravity of the device is low when the device is in a surface working environment. The device is simply supported, and is of high stability. The two cold atomic clouds share a detection laser and a photoelectric detector in the vacuum chamber of a detection area, so that the system complexity is reduced, and common-mode detection error is restrained. Interference is completed in the same slender vacuum chamber, and a magnetic field shielding material can be wrapped easily. There is no cold atom preparation structure between the two atomic clouds. The device has a small self-gravitation effect. Space is reserved for an additional gravity source to calibrate the measurement result. The device needs only one set of detection system, and has good magnetic field effect restraining performance and low quantum projection noise.
Owner:HUAZHONG UNIV OF SCI & TECH

Phase detection method of cold atom Bose-Einstein condensation vortex superposed-state gyroscope

The invention relates to a phase detection method of a cold atom Bose-Einstein condensation vortex superposed-state gyroscope. Superposed-state vortex light is emitted into a Bose-Einstein condensation state gas atom cluster to enable the Bose-Einstein condensation (BEC) atom cluster to obtain a certain orbital angular momentum, and stable vortex superposed-state matter waves are generated; the BEC atom cluster in a potential well is equivalent to a matter wave interference gyroscope. Atom density distribution of the BEC forms a stable gyroscope pattern; when the system rotates at a certain angular speed, a certain phase is generated due a Sagnac effect; each atom has a fixed scattering effect on photons; after detection light is added, a whole resonance absorption image is detected through a charge coupled device (CCD) and scattering light intensity is calculated through space calculation and time calculation; density distribution of the BEC atom cluster is reckoned so as to obtain phase information; relative light intensity change can be obtained through space subtraction, is used as a gyroscope signal and is used for reckoning a system angular speed, so that the sensitivity on the system angular speed is realized.
Owner:PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV

Method for spraying cracked selenium source on surface of substrate

The invention relates to a method for spraying a cracked selenium source on the surface of a substrate. The method comprises the following steps: entering selenium steam into a high-temperature cracking chamber; penetrating the selenium steam through two layers of porous grid plates with uniformly distributed pores, the pore diameter of which is 0.2-0.5mm, in the high-temperature cracking chamber, so that the selenium source forms cracked selenium source; and spraying the cracked selenium source to the surface of the substrate so as to complete the process of spraying the cracked selenium source on the surface of the substrate. According to the method provided by the invention, the selenium steam is adopted to penetrate through the two layers of porous grid plates at high temperature, and a large Sen (n is more than or equal to 5) atomic cluster is cracked to form a small Sen (n is less than 5) atomic cluster, thereby increasing the quantity of high-activity Se2, improving the reaction activity of a selenium element, effectively improving the film-forming quality of a CIGS (copper indium gallium selenium) layer of a CIGS film solar battery and taking an positive effect on improvement of photoelectric conversion efficiency of the CIGS film solar battery; and the selenium steam with the small atomic cluster is directly sprayed to the surface of the substrate through spray orifices, so that a selenium material can sufficiently participate in the reaction film-forming process of the CIGS layer, thereby improving the utilization rate of the selenium material.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST

Laser-based solution ablation injection analysis method

The invention provides a laser-based solution ablation injection analysis method. The method comprises the steps as follows: weighing a to-be-tested geological sample and digesting to obtain a digestion product; subjecting the digestion product to constant volume to obtain a solution sample; injecting the solution sample into a solution sample target; covering the upper part of the solution sampletarget with a sealing film, and then placing the sealed solution sample target in an ablation pool; ablating the solution sample in the solution sample target by adopting a laser beam to obtain aerosol; and loading the aerosol into an inductively coupled plasma mass spectrometer by utilizing a carrier gas for detection, thereby obtaining measured values of major elements and trace elements in theto-be-tested geological sample. By adopting the method provided by the invention, the problems of solvent-related polyatomic ion interference and sample matrix effect in the ICP-MS (Inductively Coupled Plasma Mass Spectrometer) analysis of major elements and trace elements injected by adopting a conventional solution atomization method are overcome, and a simple, environmentally-friendly and novel injection method with a film-dissolving effect is provided for analyzing solution samples by the ICP-MS.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Method for measuring isotopic abundance ratio of uranium in particles through accelerator mass spectrometry

The invention relates to a control device for the irradiation dose of an irradiation device, and provides a method for measuring the isotopic abundance ratio of uranium in particles through accelerator mass spectrometry. The method aims to solve the problems that an analysis method for the isotopic abundance ratio of uranium in existing environment sample particles is not high in analysis result accuracy, and interference is serious in the analysis process. The method comprises the following steps that 1, the sample particles are separated from a carrier and transferred to a graphite flake through ultrasonic oscillation; 2, the sample particles are transferred into a scanning electron microscope; 3, the uranium-bearing particles are found; 4, the uranium-bearing particles are dissolved; 5, a target is manufactured; 6, ruling is carried out; 7, accelerator parameters needed by each uranium isotope are determined; 8, the counting rate of each uranium isotope is measured; 9, the isotopic abundance ratio of the uranium is calculated. The problem that isotopic abundance ratio analysis of the uranium in the particles has polyatomic ion interference is solved, abundance sensitivity is obviously improved, the obtained analysis result is accurate, and the defect in an existing analysis method is overcome.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY

Nanosecond reversible phase transformation material and method for measuring phase transformation mechanism of same

The invention discloses a nanosecond reversible phase transformation material and method for measuring a phase transformation mechanism of the same. The nanosecond reversible phase transformation material has the property of generating nanosecond reversible transformation under the single action of multiple external factors or combined action of the multiple external factors. The multiple external factors include electric field, pressure and temperature; the nanosecond reversible transformation is reversible change between order distribution and disorder distribution of atoms, atom groups or molecules inside the nanosecond reversible phase transformation material so that the nanosecond reversible phase transformation material macroscopically presents a phase transformation process generated between a crystalline state and an amorphous state, the time spent by the phase transformation process is within 0.1-1000 nanoseconds, wherein the crystalline state of the material is of a lattice structure of a cubic system; meanwhile, the material has a stable high-temperature solid phase, a stoichiometric ratio of electric neutrality, P orbit ionization degree of 0.02<r sigma'<0.31 and s-p orbit hybridization degree of 1.6<rpi-1<2.5. The invention also provides a method for measuring the phase transformation mechanism by adopting experiment means, which can be applied to the explanation of the phase transformation mechanism of the material and prediction of the phase transformation property of the material and design of a novel phase transformation material.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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