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hyperbolic quadrupole title

Media Backgrounder – High level information for ...

GC-MS for "routine" use in environmental labs, the first hyperbolic quadrupole mass analyzer (a technological breakthrough), the first commercial linear ion trap and many others. The landscape changed dramatically in the top-of-the-line MS market in the late 1990s when Russian inventor

Patent Report: | US10147595 | Quadrupole rod assembly

1. A quadrupole rod assembly, comprising: at least four electrically conductive rods elongated along a longitudinal axis, the rods being circumferentially spaced from each other in a transverse plane orthogonal to the longitudinal axis, and positioned at a radius R o from the longitudinal axis, each rod comprising a plurality of rod contact surfaces in the transverse plane

and an introduction to Resolution Quadrupole and Ion Trap ...

How does the quadrupole work ?-ve +ve The quadrupole consists of four parallel rods. The opposing rods have the same polarity whilst adjacent rods have opposite polarity. Each rod is applied with a DC and an RF voltage.Ions are scanned by varying the DC/Rf quadrupole voltages. Only ions with the selected mass to charge ratio will have the correct

Effect of an axial magnetic field on the performance of a ...

We consider the case of a quadrupole mass spectrometer (QMS) in which a static magnetic field is applied axially in the z-direction along the length of the mass filter. The theoretical approach assumed in the model is that the QMS contains hyperbolic rods as electrodes and that the magnetic field acts over the full length of the mass filter assembly. Initial experimental results with argon and ...

Transmission through the quadrupole mass spectrometer …

the quadrupole, giving a charge to the mass selection system for the ions. The electrodes of the quadrupole mass filter are in general assumed to be hyperbolic though in real analyzers cylindrical rods are often used. The potential distribution in the ideal mass filter is given by f~x,y,z!5f0 x22y2 2r0 2, …

TSQ Fortis Triple Quadrupole Mass Spectrometer Confident ...

QR4 Segmented Quadrupole mass filter with hyperbolic surfaces Simplifies day-to-day operation by ensuring consistent performance and reproducible results across instruments and over time for increased productivity. Ion transfer tube and sweep cone Provides maximum robustness and tool-free maintenance. OptaMax NG ion source APCI ready

Evolution3 Triple Quadrupole GC-MS/

Quadrupole GC-MS/MS system performs all these tasks and more with ease. The unrivaled selectivity of the MS/MS process in combination with Agilent´s leading rugged inert ion source, true hyperbolic quartz Q1 and CHROMTECH´s proprietary IonRail collision cell geometry result in the following: •Ultimate sensitivity in the femtogram range.

Agilent 7010 Triple Quadrupole GC/MS System

Mass filters (2) Proprietary monolithic hyperbolic gold-coated quadrupole Mass axis stability < ± 0.10 u over 24 hours (10 to 40 °C) Quadrupole temperature 106 to 200 °C Mass range m/z 10 to 1,050 Resolution Selectable, 0.7 to 2.5 Daltons, default tune Settable, 0.4 to 4.0 Daltons, custom tune Scan rate Up to 6,250 u/s Tuning Autotune or manual

Principles of Quadrupole and Ion Trap Mass Analyzers

To achieve as perfect an electric field in the quadrupole as possible, the poles should ideally have a hyperbolic cross section. In practice most instruments have poles that are circular in cross section (the latter being much less expensive to make, as well as easier to manufacture to an accurate shape).

Understanding Quadrupole Theory

Quadrupole mass analyzer - Wikipedia

Reflections on quadrupole simulation

Hyperbolic electrodes; otherwise the quadrupole is the same as the one described by Taylor & Gibson. Here we use a 2-D potential array, reflected about the X and Y axes – to reduce file size by a factor 4. Even so, the potential arrays take up 32 for a grid size of 0.005 mm (corresponding to 0.0018 times r …

Quadrupole Mass Analyzer - an overview | ScienceDirect Topics

The quadrupole mass analyzer consists of four parallel conducting rods of hyperbolic cross section spaced about a central axis along which ions are conducted. The rods are connected to radiofrequency (RF) and direct current (DC) generators, and adjacent rods are of opposite RF phase.

ICP-MS | OHSU

ICP-MS works by atomizing samples using argon plasma, detecting isotopic elemental concentrations using a hyperbolic quadrupole mass spectrometer, and then comparing sample concentrations to appropriate elemental standards.

CiteSeerX — ELECTRON BREMSSTRAHLUNG CHARACTERISTICS ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The description of an electron bremsstrahlung characteristics calculation model for a multi-layer conversion target, placed in a hyperbolic magnetic field, is given. The bremsstrahlung characteristics from 10-layer copper target at electron energy up to 300 MeV were obtained.

Waters Xevo G2-xs Quadrupole Time-of-Flight (Q-TOF MS ...

Waters Xevo G2-xs Quadrupole Time-of-Flight (Q-TOF MS) University of Alabama Mass Spectrometry Facility Quadrupole theory oa-TOF • 4 hyperbolic or cylindrical rods with the combination of dc (U) and rf voltages (V) applied on the rods • Motion of ion in quadrupole fields: a …

Quadrupole ion trap - Wikipedia

A quadrupole ion trap is a type of ion trap that uses dynamic electric fields to trap charged particles. They are also called radio frequency (RF) traps or Paul traps in honor of Wolfgang Paul, who invented the device and shared the Nobel Prize in Physics in 1989 for this work. It is used as a component of a mass spectrometer or a trapped ion quantum computer

Mass spectrometry-based proteomics using Q Exactive, a ...

Following collisional cooling in the bent flatapole, ions are transmitted via a lens into a hyperbolic quadrupole (r 0 = 4 mm), capable of isolating ions down to an isolation width of 0.4 Th at m/z 400. The quadrupole is followed by its exit lens combined with a split lens used to gate the incoming ion beam. A

US3457404A - Quadrupole mass analyzer - Google Patents

US3457404A US3457404DA US3457404A US 3457404 A US3457404 A US 3457404A US 3457404D A US3457404D A US 3457404DA US 3457404 A US3457404 A US 3457404A Authority US United States Prior art keywords electrodes ion ions quadrupole analyzer Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

DESIGN AND FABRICATION OF A BASIC MASS -ANALYZER …

A two-inch hyperbolic rod quadrupole mass analyzer with a mass range of 400 to 200 amu and a sensitivity exceeding 100 ppb has been developed and tested by the Analog Technology Corporation. This analyzer is the basic hardware portion of a microprocessor-controlled quadrupole mass

Title: Novel radio-frequency ion trap with spherical geometry

Nov 09, 2014· Confinement of single ions in a novel radio-frequency (RF) quadrupole ion trap with spherical shape is investigated. An optimization of this spherical ion trap (SIT) is carried out in order to suppress its nonlinearity substantially by eliminating the electric octupole moment. Hence, a trapping potential and consequently an electric field very similar to the ideal quadrupole ion trap (QIT) are ...

TSQ Endura Triple-Stage Quadrupole Mass Spectrometer

Hyperbolic Quadrupole Mass Filter (Q1 and Q3) Hyperbolic quadrupoles with high ion transmission at isolation widths down to 0.4 amu provide excellent sensitivity and selectivity. Active Collision Cell (Q2) The high-pressure argon-filled collision cell produces efficient fragmentation for high sensitivity. An axial DC field speeds ion

(PDF) Prediction of quadrupole mass filter performance for ...

The quadrupole mass analyser (Fig. 2) comprises two pairs of rods that are positioned parallel to each other in a radial array, arranged in a hyperbolic or circular cross section, with opposing ...