摘要:
A multi-turn Time of Flight mass analyser is disclosed comprising a first electric sector 5 and a second electric sector 8. The second electric sector 8 is arranged orthogonal to the first electric sector 5. Ions may make multiple loops or circuits of the mass analyser before being detected and mass analysed enabling a high resolution mass analyser to be provided. According to another embodiment the mass analyser may have an open-loop geometry wherein the first electric sector is elongated and further electric sectors are arranged in a staggered manner along the length of the first electric sector. The first and second electric sectors 5,8 may be sub-divided into a plurality of electric sector segments.
摘要:
A mass spectrometer is disclosed comprising an ion guide having a plurality of electrodes each having one or more apertures through which ions are transmitted in use, wherein said ion guide comprises a helical, toroidal, part-toroidal, hemitoroidal, semitoroidal or spiral ion guiding region.
摘要:
An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.
摘要:
The invention relates to an electronic analytical technique for determining the composition and structure of substances and, more specifically, to the field of analyzers comprising at least one mass spectrometer, and can be used in medicine, biology, the oil and gas industry, metallurgy, power engineering, geochemistry, hydrology and ecology. The technical result is that of increasing the resolving power of the mass spectrometer and the sensitivity, accuracy and speed with which the composition and structure of substances are measured, while at the same time increasing the functional capabilities and reducing the geometric dimensions and the mass of substance analyzers. In the mass spectrometry method, an ion flux is generated and controlled using a single-flux, off-axis method; in parallel, using a multi-flux method; using a three-dimensional field with a middle meridian surface, including a reflecting three-dimensional type and a reflecting two-zone type, or using multiple reflection arrays. Embodiments of devices for implementing the method are proposed, as are principle ion optical systems which make it possible to produce different types of mass spectrometers with lower material consumption and smaller geometric dimensions.
摘要:
The invention provides apparatus and methods for performing tandem mass spectrometry. A tandem mass spectrometer (600) of the present invention comprises a first mass analyzer (250, 350) and a second mass analyzer (450, 550). At least one of the mass analyzers is a time-of-flight mass analyzer and comprises at least one electric sector (250, 350, 450 or 550).
摘要:
A mass spectrometer is disclosed comprising an ion guide having a plurality of electrodes each having one or more apertures through which ions are transmitted in use, wherein said ion guide comprises a helical, toroidal, part-toroidal, hemitoroidal, semitoroidal or spiral ion guiding region.
摘要:
A mass analyzer for use in a mass spectrometer. The mass analyzer has a set of electrodes including electrodes arranged to form at least one electrostatic sector, the set of electrodes being spatially arranged to be capable of providing an electrostatic field in a reference plane suitable for guiding ions along a closed orbit in the reference plane, wherein the set of electrodes extend along a drift path that is locally orthogonal to the reference plane and that curves around a reference axis so that, in use, the set of electrodes provide a 3D electrostatic field region. The mass analyzer is configured so that, in use, the 3D electrostatic field region provided by the set of electrodes guides ions having different initial coordinates and velocities along a single predetermined 3D reference trajectory that curves around the reference axis.