Systeme und Verfahren zum Betrieb Linearer Ionenfallen in einem Dualen Abgeglichenen Wechselspannung-Modus/unabgeglichenen Hf-Modus für 2D-Massenspektrometrie

Details

Veröffentlichungs-Nr.

EP3787005

Aktenzeichen

EP20192743

Anmeldetag

25. August 2020

Veröffentlichung

20. März 2024

Erteilung

20. März 2024

Rechtsraum

EP

IPC

H01J49/00H01J49/02H01J49/42

Abstract

A mass selective ion trapping device includes a linear ion trap and a RF control circuitry. The ion trap includes a plurality of trap electrodes configured for generating a quadrupolar trapping field in a trap interior and for mass selective ejection of ions from the trap interior. The RF control circuitry is configured to apply a balanced AC voltage to the trap electrodes during a first period of time such that an AC voltage applied to a first pair of trap electrodes is of the same magnitude and of opposite sign to an AC voltage applied to a second pair of trap electrodes; apply unbalanced RF voltage to the second pair of trap electrodes during a second period of time; ramp the balanced AC voltage down and the unbalanced RF voltage up during a transition period; and eject ions from the linear ion trap after the second period of time.

Anmelder

Firma

Thermo Finnigan LLC

Land

🇺🇸 USA

Fachgebiete