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107 results about "Cyclotron resonance" patented technology

Cyclotron resonance describes the interaction of external forces with charged particles experiencing a magnetic field, thus already moving on a circular path. It is named after the cyclotron, a cyclic particle accelerator that utilizes an oscillating electric field tuned to this resonance to add kinetic energy to charged particles.

Instrument for separating ions in time as functions of preselected ion mobility and ion mass

An ion separation instrument includes an ion source coupled to at least a first ion mobility spectrometer having an ion outlet coupled to a mass spectrometer. Instrumentation is further included to provide for passage to the mass spectrometer only ions defining a preselected ion mobility range. In one embodiment, the ion mobility spectrometer is provided with electronically controllable inlet and outlet gates, wherein a control circuit is operable to control actuation of the inlet and outlet gates as a function of ion drift time to thereby allow passage therethrough only of ions defining a mobility within the preselected ion mobility range. In another embodiment, an ion trap is disposed between the ion mobility spectrometer and mass spectrometer and is controlled in such a manner so as to collect a plurality of ions defining a mobility within the preselected ion mobility range prior to injection of such ions into the mass spectrometer. In yet another embodiment, an ion inlet of the ion trap may be electronically controlled relative to operation of the ion mobility spectrometer as a function of ion drift time to thereby allow passage therein only of ions defining a mobility within the preselected ion mobility range. The mass spectrometer is preferably a Fourier Transform Ion Cyclotron Resonance mass spectrometer, and the resulting ion separation instrument may further include therein various combinations of ion fragmentation, ion mass filtering, ion trap, charge neutralization and / or mass reaction instrumentation.
Owner:INDIANA UNIV RES & TECH CORP

Instrument for separating ions in time as functions of preselected ion mobility and ion mass

An ion separation instrument includes an ion source coupled to at least a first ion mobility spectrometer having an ion outlet coupled to a mass spectrometer. Instrumentation is further included to provide for passage to the mass spectrometer only ions defining a preselected ion mobility range. In one embodiment, the ion mobility spectrometer is provided with electronically controllable inlet and outlet gates, wherein a control circuit is operable to control actuation of the inlet and outlet gates as a function of ion drift time to thereby allow passage therethrough only of ions defining a mobility within the preselected ion mobility range. In another embodiment, an ion trap is disposed between the ion mobility spectrometer and mass spectrometer and is controlled in such a manner so as to collect a plurality of ions defining a mobility within the preselected ion mobility range prior to injection of such ions into the mass spectrometer. In yet another embodiment, an ion inlet of the ion trap may be electronically controlled relative to operation of the ion mobility spectrometer as a function of ion drift time to thereby allow passage therein only of ions defining a mobility within the preselected ion mobility range. The mass spectrometer is preferably a Fourier Transform Ion Cyclotron Resonance mass spectrometer, and the resulting ion separation instrument may further include therein various combinations of ion fragmentation, ion mass filtering, ion trap, charge neutralization and / or mass reaction instrumentation.
Owner:INDIANA UNIV RES & TECH CORP

Estimation of ion cyclotron resonance parameters in fourier transform mass spectrometry

The present invention comprises a method and system for accurate estimation of the ion cyclotron resonance (ICR) parameters in Fourier-transform mass spectrometry (FTMS / FT-ICR MS). The parameters are essential to estimating the mass to charge ratio of an ion from FT-ICR MS data, the intended purpose of the instrument. Achieving greater accuracy in the parameters assists in greater accuracy of the mass to charge ratio of an ion, and obtaining an accurate estimation of the mass to charge ratio of an ion further aides in detecting mass with sub-ppm accuracy. Estimating mass in this manner enhances identification and characterization of large molecules. The inventive method and system thereby enhances the data obtained by conventional FTMS by accurately estimating ICR parameters. Ultimately, accurate estimates of the masses of molecules and detection and characterization of molecules from FT-ICR MS data are obtained.
Owner:CEDARS SINAI MEDICAL CENT

Method and apparatus for fourier transform ion cyclotron resonance mass spectrometry

A novel method and apparatus for Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FTICR-MS). The FTICR-MS apparatus has a pre-ICR mass separation and filtering device capable of receiving ionized molecules with a plurality of mass to charge (M / Z) sub-ranges. The pre-ICR mass separation and filtering device divides the ionized molecules into a plurality of smaller packets, each of the smaller packets is within one of the M / Z sub-ranges. A magnet in the FTICR-MS apparatus provides a controlled magnetic field. A plurality of ion cyclotron resonance (ICR) cells are arranged in series in the controlled magnetic field and operate independently. An ion trapping device connects the pre-ICR mass separation and filtering device, and stores one of the plurality of smaller packets, prior to sending it to one of the plurality of ICR cells.
Owner:MED LIFE DISCOVERIES LP

Electron-cyclotron resonance plasma reactor with multiple exciters

An Electron-Cyclotron Resonance (ECR) Plasma Reactor with Multiple Exciters is disclosed. The exciters relate to a mechanism that converts the radiation energy to the electron's kinetic energy. With using a suitable antenna distributes the RF energy to distinguished exciter individually, each exciter has its own magnetic coil to build high magnetic field to resonance the electron of the operation gas, ionize the gas and generate high speed electrons. All of the high-speeded electrons can be guided by magnetic flux and accumulated to the remained part of the reaction chamber. There is an auxiliary magnet to cause energized electron moving in a helix path. The helix path makes more chance of the collision between the electron and the process gas. When collision occurs, the electron's kinetic energy activates the process gas and high-density plasma or radicals generated. The auxiliary magnetic field is also used for controlling the uniformity of plasma near the wafer pedestal area. This is a distributed ECR system with multiple RF energy conversion mechanisms, the "exciters". It simplifies the total system complexity by discrete but simpler main magnets, cooling system, low power RF energy sources etc. The invention gives an easy way to build a large-sized ECR just by increasing the number of exciters.
Owner:NI HAO JAN

Total ion number determination in an ion cyclotron resonance mass spectrometer using ion magnetron resonance

The total number of ions created br obtained during an ionization or ion introduction event in a Fourier transform ion cyclotron resonance mass spectrometer are determined either by using an on-resonance experimental technique or an off-resonance experimental technique. Both techniques exploit ion magnetron motion. In the on-resonance technique the spectrometer is excited in the magnetron mode and the single resonance signal resulting from this excitation is detected to determine the total number of ions. In the off-resonance technique the magnetron mode is excited at a frequency that is near the magnetron frequency while simultaneously detecting the resulting ion motion. The off-resonance technique leaves the ion population in a state that is amenable to subsequent analysis.
Owner:SIEMENS AG

Apparatus and method for improving fourier transform ion cyclotron resonance mass spectrometer signal

Disclosed is apparatus and method for improving the signal by changing the voltage applied to an analyzing trap of a high resolving power Fourier Transform Ion Cyclotron Resonance (FT-ICR) mass spectrometer. More specifically, after the ion activation, a voltage different from that of a trap electrode is applied to an additional electrode in the center of the trap electrode, and the voltage is maintained until the end of a detection cycle. Applying the above method, the stability of the ions confined in a trap is more increased, and therefore, the detected time domain signal is being lengthened. The lengthened time domain signal results in an increase of the frequency or an improvement of the resolving power and the sensitivity of the mass-to-charge domain signal.
Owner:KOREA BASIC SCI INST

Characterization of crude oil by fourier transform ion cyclotron resonance mass spectrometry

A system, method and computer program product are provided for calculating one or more indicative properties, e.g., one or more of the cetane number, octane number, pour point, cloud point and aniline point of oil fractions, from the density and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) of a sample of an oil sample.
Owner:SAUDI ARABIAN OIL CO

PSM high-voltage power supply control system based on MCU and FPGA

The invention discloses a PSM high-voltage power supply control system based on an MCU and an FPGA. The system comprises an MCU logical controller and an FPGA pulse controller. The MCU logical controller and the FPGA pulse controller is communicated with an IPC1 (industrial personal computer) through an RS232 serial port. The IPC1 and an IPC2 form an upper computer system matched with control software. The MCU logical controller and the FPGA pulse controller are connected with high-voltage power supply system parts based on the PSM technology through optical fibers. The MCU logical controller and the FPGA pulse controller execute external signal instructions and control the operation of the parts of the high-voltage power supply system according to the power supply operation mode input by the upper computer control system. The control system has the advantages that the control system is designed by combining the MCU and the FPGA, and technical guarantee is provided for the stable operation of a 140GHz electronic cyclotron resonance heating system on an EAST nuclear fusion device.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI

Fast controllable polarizer for high-power electron cyclotron resonance heating system

The invention belongs to the field of microwave technologies, and specifically relates to a fast controllable polarizer for a high-power electron cyclotron resonance heating system. The fast controllable polarizer comprises a microwave reversing bend, a mounting base plate, a polarization mirror, a polarization mirror rotating mechanism and a rotation driving mechanism, and is characterized in that the microwave reversing waveguide bend is used for transmitting high-power microwaves and realizing 90-degree reversing in transmission direction of the microwaves; the mounting base plate is used for positioning the polarization mirror, the polarization mirror rotating mechanism and the rotation driving mechanism on the microwave reversing bend; the polarization mirror is used for reflecting the microwaves and realizing changes in microwave polarization mode while rotating; the polarization mirror rotating mechanism is used for realizing rotation of the polarization mirror in a vacuum environment; and the rotation driving mechanism is used for realizing accurate positioning control and protection for rotation of the polarization mirror. The fast controllable polarizer is high in positioning accuracy and capable of being fast controlled remotely, can MW-magnitude long-pulse millimeter waves stably and efficiently, and can meet an arbitrary control requirement of the electron cyclotron system for the microwave polarization mode.
Owner:SOUTHWESTERN INST OF PHYSICS

Correction of asymmetric electric fields in ion cyclotron resonance cells

ActiveUS8766174B1Impairs detected signalHigh strengthIsotope separationOmegatronsHarmonicSideband
The invention relates to a method and a device for optimization of electric fields in measurement cells of Fourier transform ion cyclotron resonance mass spectrometers. The invention is based on the rationale that asymmetric electric fields with uniformly or non-uniformly perturbed field axes can appear in ion cyclotron resonance cells and therefore the axis of the magnetron orbit can become radially displaced. Shifted magnetron orbits negatively affect the cyclotron excitation, deteriorate the FT-ICR signal, increase the intensity of an even-numbered harmonics peak, lead to stronger side bands of the FT-ICR signal, and in extreme cases, cause loss of ions. The present invention helps in probing the shift of the magnetron motion, detecting parameters indicative of the offset of the electric field axis and / or correcting it by trimming it back to the geometric axis of the cell.
Owner:BRUKER DALTONIK GMBH & CO KG

Correction of asymmetric electric fields in ion cyclotron resonance cells

The invention relates to a method and a device for optimization of electric fields in measurement cells of Fourier transform ion cyclotron resonance mass spectrometers. The invention is based on the rationale that asymmetric electric fields with uniformly or non-uniformly perturbed field axes can appear in ion cyclotron resonance cells and therefore the axis of the magnetron orbit can become radially displaced. Shifted magnetron orbits negatively affect the cyclotron excitation, deteriorate the FT-ICR signal, increase the intensity of an even-numbered harmonics peak, lead to stronger side bands of the FT-ICR signal, and in extreme cases, cause loss of ions. The present invention helps in probing the shift of the magnetron motion, detecting parameters indicative of the offset of the electric field axis and / or correcting it by trimming it back to the geometric axis of the cell.
Owner:BRUKER DALTONIK GMBH & CO KG

Method and equipment for raising speed of electronic cyclotron resonance chemical vapor deposition

The present invention relates to microwave low temperature plasma technology. The equipment includes microwave source, vacuum sealing, film depositing and vacuum pump systems and magnetic field generating and gas path and gas controlling parts. The magnetic field winding is set around the resonant cavity wall to generate axial magnetic field configuration required by the electronic cyclotron resonance. The present invention is characterized by the permanent magnet unit, which is set over the sample bench to generate homogeneous axial magnetic field in the depositing chamber, and has small volume and thus great moving space in the depositing chamber and great axial magnetic field change. The axial magnetic field configuration is formed and regulated through the combination of the winding and the permanent magnet unit, and the magnetic field configuration results in high film depositing speed.
Owner:BEIJING UNIV OF TECH

Process for making at least one nanotube between two electrically conducting elements and device for implementing such a process

This invention relates to a process for making at least one nanotube (2) between two electrically conducting elements (4) located on a substrate (8), the said process using microwave power in a deposition chamber (6), a gas containing organic molecules injected at low pressure inside the deposition chamber (6). According to the invention, the process also uses a magnetic field and at least one electronic cyclotron resonance zone (16) facilitating ionization and / or dissociation of the injected gas, the process also comprising a screening operation of the various species produced in each electronic cyclotron resonance zone (16), in order to exclusively enable CxHyo type non condensable free radicals to access the deposition zone (24) to make the said nanotube. The invention also relates to a device for implementing such a process.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Plasma generation system having a refractor

A plasma generation system that is capable of generating uniform high-density plasma includes a microwave generator for generating microwaves, a refractor for altering a direction of propagation of the microwaves, and an electromagnetic unit for applying a magnetic field to plasma formed by the microwaves to generate electron cyclotron resonance (ECR).
Owner:SAMSUNG ELECTRONICS CO LTD

Tandem Fourier Transform Ion Cyclotron Resonance Mass Spectrometer

A tandem Fourier transform ion cyclotron resonance mass spectrometer is provided. In the mass spectrometer, the ions selected by a FT-ICR mass analyzer, which can perform an ion selection process and a mass measurement process with a time interval between the processes, are transmitted through an ion guide to a collision cell, which is located a predetermined distance from the FT-ICR mass analyzer, to split into fragment ions. The fragment ions are transmitted to the FT-ICR mass analyzer that measures the mass of the fragment ions. The fragment ions are generated in the collision cell 60 established separately from the FT-ICR mass analyzer 40 according to the mass spectrometer. Accordingly, It can solve various problems (e.g., the radius reduction of cyclotron motion of colliding ions, or the removal of periphery gas after generating the fragment ions) occurred in a tandem mass spectrometer using a conventional tandem-in-time mass analysis method. Also, a high resolution and with sensitivity measurement can be achieved. Moreover, when a reagent gas instead of a collision gas in the collision cell is injected, the gas phase reaction of the selected ions and the reagent gas can be observed, and the mass of the ions generated in the gas phase reaction can be measured.
Owner:KOREA BASIC SCI INST

Apparatus and method for ion cyclotron resonance mass spectrometry

An apparatus and method for performing ion mass spectrometry via Fourier transform ion cyclotron resonance utilizes a superconducting magnet with a bore and a vacuum chamber received in the magnet bore. The superconducting magnet and the vacuum chamber are enclosed in a cooling chamber and cooled together until the operating temperature of the magnet is reached. Because the temperature of the vacuum chamber is similar to the operating temperature of the superconducting magnet during operation, the wall of the vacuum chamber is sufficiently cold to function as a cryogenic vacuum pump to provide enhanced pumping of the volume in the vacuum chamber. The approach of cooling the vacuum chamber wall to provide cryogenic pumping can also be used when the magnet is of a non-superconducting type.
Owner:TRUSTEES OF BOSTON UNIV

Fourier transform ion cyclotron resonance mass spectrometer using a cryo-detection system

A Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) is provided. A preamplifier is installed as nearest to an ion cyclotron resonance (ICR) trap as possible at a detector part in the mass spectrometer, and thermal noise generated at the preamplifier is minimized by means of a cryo-cooling system to increase a signal-to-noise ratio of ion detection signals such that an ultra-low amount of specimen can be detected, which was impossible in the related art.
Owner:KOREA BASIC SCI INST

Fourier transform ion cyclotron resonance mass spectrometer using a cryo-detection system

A Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) is provided. A preamplifier is installed as nearest to an ion cyclotron resonance (ICR) trap as possible at a detector part in the mass spectrometer, and thermal noise generated at the preamplifier is minimized by means of a cryo-cooling system to increase a signal-to-noise ratio of ion detection signals such that an ultra-low amount of specimen can be detected, which was impossible in the related art.
Owner:KOREA BASIC SCI INST

Method of depositing a copper seed layer which promotes improved feature surface coverage

We have discovered a method of improving step coverage of a copper seed layer deposited over a semiconductor feature surface which is particularly useful for small size features having a high aspect ratio. Using a contact via as an example of a high aspect ratio feature, we have demonstrated that despite previously-held views, it is possible to increase the copper seed layer coverage simultaneously at the bottom of the via and on the wall of the via by increasing the percentage of the depositing copper species which are ions. The percentage of species ionization which is necessary to obtain sufficient step coverage for the copper seed layer is a function of the aspect ratio of the feature. For features having a 0.25 mum or smaller feature size, an aspect ratio of about 3:1 requires that about 50% or more of the copper species be ions at the time of deposition on the substrate. As the aspect ratio increases to about 4:1, the percentage of species which are ions is preferably increased to between about 60% and 70%. When the aspect ratio is about 5:1 or greater, the percentage of species which are ions is preferably increased to greater than 80%. This increase in the percentage of copper species which are ionized can be achieved using techniques known in the art, such as, for example, laser ablation of the copper target, electron cyclotron resonance, hollow cathode, and applicants' preferred technique, an inductively coupled RF ion metal plasma. We have further discovered that when an inductively coupled plasma is used to increase ionization, an increase in power to the ionization source is not enough to obtain the desired percentage of ions in many cases. It is also necessary to increase the plasma gas pressure. Typically the plasma gas is argon, and the argon pressure in the copper seed layer deposition chamber is increased to fall within the range of about 20 to about 100 mT, preferably between about 30 mT and 70 mT.
Owner:APPLIED MATERIALS INC

Electronic cyclotron resonance dusting device for treatment of glass chip or chip

An electron cyclotron ashing device is provided with an ashing chamber having a glass substrate or wafer pulling-in port, an ashing gas discharging port, and a gas supplying section on one side, a lower electrode on which the glass substrate or wafer coated with a photoresist is stably placed in the ashing chamber, and an RF power source which supplies electric power to the lower electrode. The ashing device is also provided with the ECR source which forms a plasma in the ashing chamber, an electric power supplying device which supplies electric power to the ECR source, a scanning device which drives the ECR source or glass substrate or wafer facing the source forward and backward or leftward and rightward, and others.
Owner:DMS CO LTD

Method for extracting and analyzing water-soluble and water-insoluble organic matters in atmospheric fine particulate matter

The invention discloses a method for extracting and analyzing water-soluble and water-insoluble organic matters in an atmospheric fine particulate matter. The method mainly comprises the steps of respectively carrying out ultrasonic extraction on water-soluble and water-insoluble organic matters in the atmospheric fine particulate matter by using ultrapure water and dichloromethane, filtering an extracting solution by using a 0.45[mu]m filter membrane after ultrasonic treatment, blowing to nearly dry with nitrogen, and respectively fixing the volume by using methanol / water (1:1, v / v) and methanol / toluene (1:1, v / v) solutions; and analyzing organic components of the atmospheric fine particulate matter in a positive and negative ion mode by means of direct sample injection by utilizing a 15TFourier transform ion cyclotron resonance mass spectrometer (15T FT-ICR MS) in combination with an electrospray ionization source (ESI) and an atmospheric pressure photoionization source (APPI), andanalyzing the composition characteristics of the organic compound at the molecular level. Compared with a conventional method, the method has the advantages that the pretreatment is easy, convenient and rapid, a high-throughput detection technology and a mass data processing system for organic components of the atmospheric fine particulate matter can be constructed through the high-resolution characteristic of FT-ICR MS, and information can be comprehensively obtained.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Lens for electron capture dissociation, fourier transform ion cyclotron resonance mass spectrometer comprising the same and method for improving signal of fourier transform ion cyclotron resonance mass spectrometer

A lens for electron capture dissociation may include: a first electrode and a second electrode spaced apart from each other and arranged along a first direction; and a third electrode and a fourth electrode spaced apart from each other and arranged along a second direction perpendicular to the first direction. The first electrode and the second electrode may be disposed in a space in which a magnetic field is formed in the first direction and trap electrons. The third electrode and the fourth electrode may be in the form of a flat plate and may apply an electric field to the trapped electrons in the second direction.
Owner:KOREA BASIC SCI INST

Electron cyclotron resonance (ecr) plasma source having a linear plasma discharge opening

The invention relates to an electron cyclotron resonance (ECR) plasma source having a linear plasma discharge opening (9, 27, 28, 30), comprised of a plasma chamber, inside of which a centered wave distributor is provided, and having a multi-pole magnetic field arrangement in the area of the linear plasma discharge opening. The centered wave distributor consists of at least two separate wave distributors (3, 4) that are placed inside a respective partial plasma chamber (1, 2, 21, 22, 32, 23). A linear partial plasma discharge opening (7, 8, 23, 24, 34, 35) and multi-pole magnetic field arrangements (10, 11, 38, 39) are provided on each partial plasma chamber (1, 2, 21, 22, 32, 23). The at least two linear plasma discharge openings (7, 8, 23, 24, 34, 35) are arranged with regard to one another in such a manner that, together, they form at least one plasma discharge opening (9, 27, 28, 30) of the ECR plasma source.
Owner:ROTH & RAU B V

Conversion Of Natural Gas To Liquid Form Using A Rotation/separation System In A Chemical Reactor

A system and method are provided for the separation of hydrogen from natural gas feedstock to form hydrocarbon radicals. Aspects of the system include perpendicular magnetic and electric fields, a method of radical formation that separates hydrogen from the reaction process, and a separation method based on centrifugal forces and phase transitions. The gases rotate in the chamber due to the Lorentz force without any mechanical motion. Rotation separates gases and liquids by centrifugal force. The lighter species are collected from the mid region endpoint of the apparatus and fed back for further reaction. A new concept of controlled turbulence is introduced to mix various species. A novel magnetic field device is introduced comprised of two specially magnetized cylinders. A novel control of temperatures, pressures, electron densities and profiles by, RF, microwaves, UV and rotation frequency are possible especially when atomic, molecular, cyclotron resonances are taken into account. The electrodes can be coated with catalysts; the entire apparatus can be used as a new type of chemical reactor.
Owner:NONLINEAR ION DYNAMICS

Water-cooled high-power electron cyclotron resonance heating system direct current blocking device

The invention belongs to the technical field of microwaves, and particularly relates to a water-cooled high-power electron cyclotron resonance heating system direct current blocking device which comprises a corrugated waveguide A, a corrugated waveguide B, an insulating sleeve and a cooling water pipe located outside the insulating sleeve, wherein the corrugated waveguide A and the corrugated waveguide B are relatively and coaxially placed, insulating sleeve connecting flanges are arranged on the corrugated waveguides, the inner side portions of the corrugated waveguides are located in the insulating sleeve, the insulating sleeve connecting flanges are clamped on the two sides of the insulating sleeve, and a certain gap is reserved between the waveguide butt joint end faces of the two corrugated waveguides. The insulating sleeve positions the metal waveguides on the two sides; a gap between waveguides is arranged, a transmission system and a microwave electron cyclotron pipe of an electron cyclotron transmission system connected separately with waveguides are isolated in an insulation mode. Different from common insulation isolation in the prior art, a cooling pipe structure is designed outside the insulation sleeve, and two effects are achieved, besides the cooling effect, microwaves leaked out of the gap between waveguides can be absorbed.
Owner:SOUTHWESTERN INST OF PHYSICS
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