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Bruker Daltonik Gmbh

Jens Bossmeyer

Andreas Haase

Felician Muntean

Thomas Maier

Anil Mavanur

Peter Lasch

Dieter Naumann

Chaminda M Gamage

Maren Stämmler

The invention relates to mass spectrometers with optically pumped lasers, whose laser light can be used for ionization by laser desorption, for the fragmentation of ions by photodissociation (PD), for the initiation of ion reactions, and for other purposes. The invention provides a laser system for a mass spectrometer, with which at least two laser beams of different wavelengths can be generated for use at different points along an ion path from an ion source to an ion detector in the mass spectrometer.

Mass spectrometer with laser system for producing photons of different energies

The invention relates to a mass spectrometer, comprising an ion guide having a plurality of electrodes that are supplied with a radio frequency voltage to facilitate radial confinement of ions in an internal volume defined by inward facing surfaces of the electrodes, the internal volume including a first section having a variable radial diameter along a longitudinal axis of the ion guide, in which the electrodes are helically wound, and an adjacent second section having a substantially constant radial diameter along the longitudinal axis, wherein the electrodes extend from the first section to the second section continuously. The continuous nature of the ion guide electrodes facilitates in particular unhindered axial propagation of ions through the assembly and prevents ion losses during their transmission through different compartments of the mass spectrometer.

Mass spectrometer comprising a radio frequency ion guide having continuous electrodes

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Bremen, Germany

Jens Bossmeyer