Class / Patent application number | Description | Number of patent applications / Date published |
250489000 | ION COLLECTORS | 10 |
20120286172 | Collection of Atmospheric Ions - The subject matter described herein relates to a method for collection of atmospheric ions subject to an electron avalanche associated with a gas multiplication effect between parallel plate collectors. A voltage source can be provided. The voltage source can provide a voltage that can cause a high electric field between two consecutive plates of the plurality of parallel plates. The high electric field can cause an electron avalanche that can cause electron multiplication. Energy associated with these multiplied electrons can be extracted, and studied to give insight into where the most abundant source of atmospheric charge is located. Related apparatus, systems, techniques and articles are also described. | 11-15-2012 |
20130099137 | End Cap Voltage Control of Ion Traps - An ion trap for a mass spectrometer has a conductive central electrode with an aperture extending from a first open end to a second open end. A conductive first electrode end cap is disposed proximate to the first open end thereby forming a first intrinsic capacitance between the first end cap and the central electrode. A conductive second electrode end cap is disposed proximate to the second open end thereby forming a second intrinsic capacitance between the second end cap and the central electrode. A first circuit couples the second end cap to a reference potential. A signal source generating an AC trap signal is coupled to the central electrode. An excitation signal is impressed on the second end cap in response to a voltage division of the trap signal by the first intrinsic capacitance and the first circuit. | 04-25-2013 |
20130221242 | Mass Spectrometer - A mass spectrometer is disclosed comprising a quadrupole rod set ion trap wherein a potential field is created at the exit of the ion trap which decreases with increasing radius in one radial direction. Ions within the ion trap are mass selectively excited in a radial direction. Ions which have been excited in the radial direction experience a potential field which no longer confines the ions axially within the ion trap but which instead acts to extract the ions and hence causes the ions to be ejected axially from the ion trap. | 08-29-2013 |
20130264496 | CHARGED PARTICLE EMISSION GUN AND CHARGED PARTICLE RAY APPARATUS - Provided is a charged particle emission gun with which cleaning of a tip is possible without stopping the operation of the charged particle emission gun for a long time and without heating the tip. The charged particle emission gun includes a cleaning photo-irradiation apparatus that generates ultraviolet light or infrared light to irradiate a tip, and an optical fiber for guiding the ultraviolet light or the infrared light toward the tip. The cleaning photo-irradiation apparatus generates ultraviolet light or an infrared light with a predetermined wavelength and intensity to desorb a molecule adsorbed on the tip through photon stimulated desorption, or to desorb a molecule adsorbed on the tip through photon stimulated desorption and ionize the desorbed molecule. | 10-10-2013 |
20140145095 | METHOD AND APPARATUS FOR DIPOLAR DC COLLISIONAL ACTIVATION OF IONS TRANSMITTED THROUGH AN ELECTRODYNAMIC MULTIPOLE DEVICE - A method of operating a quadrupole mass spectrometer is described where one of the stages thereof has a pairs of opposing rods and one of the pair of rods is operated with a zero voltage potential difference therebetween and the other of the pair of opposing rods is operated with a voltage potential difference therebetween. The potential field unbalance causes the analyte ions to deviate from the axial centerline of the stage so as to undergo additional RF heating. The stage is operated in a transmission mode and the resultant reaction products may be further processed in subsequent stages or output to a mass spectrometer. | 05-29-2014 |
20140239197 | Electrostatic Trap - An electrostatic trap such as an orbitrap is disclosed, with an electrode structure. An electrostatic trapping field of the form U′(r, φ, z) is generated to trap ions within the trap so that they undergo isochronous oscillations. The trapping field U′(r, φ, z) is the result of a perturbation W to an ideal field U(r, φ, z) which, for example, is hyperlogarithmic in the case of an orbitrap. The perturbation W may be introduced in various ways, such as by distorting the geometry of the trap so that it no longer follows an equipotential of the ideal field U(r, φ, z), or by adding a distortion field (either electric or magnetic). The magnitude of the perturbation is such that at least some of the trapped ions have an absolute phase spread of more than zero but less than 2π radians over an ion detection period T | 08-28-2014 |
20150076366 | MASS SPECTROMETRIC ION STORAGE DEVICE FOR DIFFERENT MASS RANGES - The invention relates to devices and methods for the storage of ions in mass spectrometers. The invention proposes the generation and superposition of two multipole fields of different order, independent of each other, in an RF multipole rod system. In an embodiment with eight pole rods, for example, it is thus possible to jointly store low-energy electrons in a central RF quadrupole field, which effectively acts only on electrons and holds them together radially, on the one hand, and multiply charged heavy positive ions in an RF octopole field, which effectively acts only on the ions, on the other hand, in order to fragment the positive ions by electron capture dissociation (ECD). In a different embodiment, multiply charged positive analyte ions and suitable negative reactant ions can react with each other in an octopole field by electron transfer dissociation (ETD) with a high fragmentation yield, and the fragment ions can subsequently be bundled by a transition to a quadrupole field to form a fine ion beam, which can leave the multipole rod system axially. A mixture of hexapole and dodecapole systems is also possible. | 03-19-2015 |
20160027604 | ION TRAP APPARATUS AND METHOD FOR MANUFACTURING SAME - An ion trap device includes a substrate over which at least one central DC electrode, an RF electrode and at least one side electrode are disposed. The central DC electrode includes a DC connector pad and a DC rail connected to the DC connector pad. The RF electrode includes at least one RF rail located adjacent to the DC rail and an RF pad connected to the at least one RF rail. The RF electrode is disposed between the central DC electrode and the side electrode. At least one pair of electrodes among the central DC electrode, the RF electrode and the side electrode have round corners facing each other. | 01-28-2016 |
20160126076 | Inline Ion Reaction Device Cell and Method of Operation - A method and apparatus for conducting ion to charged species reactions, more particularly reactions wherein the charged species is an electron, such as ECD. The apparatus comprises first and second pathways which are orthogonal to one another. The first pathway through which ions are introduced comprises multiple multipoles with a gap situated there between. The second pathway introduces the charged species through the gap orthogonally to the first pathway. In this way, a cross-type reaction device allows ion-charged species interactions to occur. | 05-05-2016 |
20190144471 | TIN-CONTAINING DOPANT COMPOSITIONS, SYSTEMS AND METHODS FOR USE IN ION IMPLANTATION SYSTEMS | 05-16-2019 |