Trapped ion mobility spectrometer with high ion storage capacity

US10458944B2 · kind B2 · utility

Inventors

• Oliver Räther · Lilienthal, DE
• Thomas Betz · Langenselbold, DE
• Melvin Andrew Park · Billerica, US

Key dates

• Filing date: Jun 3, 2016
• Grant date: Oct 29, 2019
• Expiry date: Jun 3, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J49/426
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention is related to a trapped ion mobility spectrometer (TIMS device) and proposes to use higher order (order N>2) linear multipole RF systems to accumulate and analyze ions at an electric DC field barrier, either pure higher order RF multipole systems or multipole RF systems with transitions from higher order towards lower order, e.g. from a linear octopolar RF system (N=4) to a linear quadrupole RF system (N=2) in front of the apex of the electric DC field barrier.