Concept

Quadrupole mass analyzer

Publications associées (95)

Add-on extends the capability of a conventional NMR spectrometer

A spectrometer allowing the measurement of signals with spin-spin relaxation times as short as 0.5 μs has been developed. It consists of a transmitter based on a commercial spectrometer and a homemade receiver. The acquired signals are imported in the soft ...

Elsevier2005

Electron capture dissociation fourier transform ion cyclotron resonance mass spectrometry in the electron energy range 0-50 eV

Yury Tsybin

Electron capture dissocn. (ECD) of polypeptide cations was obtained with pencil and hollow electron beams for both sidekick and gas-assisted dynamic ion trapping (GADT) using Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) with an el ...

2004

The performance of a multiplexing three-axis spectrometer

Henrik Moodysson Rønnow

A novel multiplexing three-axis spectrometer for thermal neutrons has been tested for single-crystal spectroscopy. Measuring the entire 2D dispersion manifold in the bc plane of the spin-Peierls compound CuGeO3, we demonstrate that the spectrometer fascili ...

2004

Analysis of coordination and organometallic compounds using photoionisation mass spectrometric techniques

Paul Joseph Dyson, Antoine Dorcier

A range of coordination and organometallic compounds have been analysed by quadrupole ion-trap mass spectrometry using various photoionisation methods. Atmospheric-pressure photo ionisation (APPI), which combines atmospheric-pressure chemical ionisation (A ...

2003

Planar microcoil-based microfluidic NMR probes

Nico de Rooij, Giovanni Boero, Radivoje Popovic, Pierre-André Besse, Franck Vincent, Charles Massin, Klaus Ehrmann

Microfabricated small-volume NMR probes consisting of electroplated planar microcoils integrated on a glass substrate with etched microfluidic channels are fabricated and tested. 1H NMR spectra are acquired at 300MHz with three different probes having obse ...

2003

Analysis of organometallic compounds using ion trap mass spectrometry

Paul Joseph Dyson

Ion traps are an increasingly common presence as mass analysers in commercial bench-top mass spectrometers. Such instruments, usually interfaced with electrospray ionisation or nanospray sources, are invariably aimed at organic and biological applications, ...

2003

Orientation Modulation of a Synthetic Polypeptide in Self-Assembled Monolayers: A TOF-SIMS Study

Horst Vogel

Structure and orientation of mols. are key properties of functionalized surfaces. Using time-of-flight secondary ion mass spectrometry (TOF-SIMS), here we investigate how to modulate these parameters upon the immobilization process varying the conditions o ...

2003

Combined infrared multiphoton dissociation and electron capture dissociation with a hollow electron beam in Fourier transform ion cyclotron resonance mass spectrometry

Yury Tsybin

An electron injection system based on an indirectly heated ring-shaped dispenser cathode was developed and installed in a 7 T Fourier transform ICR (FTICR) mass spectrometer. This new hardware design allows high-rate electron capture dissocn. (ECD) to be c ...

2003

Collisionally enhanced isotopic selectivity in multiphoton dissociation of vibrationally excited CF3H

Thomas Rizzo, Monika Kowalczyk

We have studied infrared multiphoton dissociation of CF3H pre-excited to the second C-H stretch overtone under collisional conditions in view of developing a laser isotope separation scheme for carbon-13. This single stage process results in a C2F4 product ...

2003

Desorption of ions during exposure of metallic and semiconductive samples to surface current pulses in vacuum

Yury Tsybin

Effects of nanosecond electromagnetic pulses on metallic (Al) and semiconductor (Si, GaAs) surfaces were investigated exptl. in vacuum. For the surface c.d. 104-106 Wcm-2, an impulse desorption of ions was obsd. from adsorbed gaseous layers or deposited or ...

2002

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