Ion trap with longitudinal permanent magnet and mass spectrometer using same

US7573029B2 · kind B2 · utility

Assignees

• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
• Universite Pierre Et Marie Curie (Paris 6) · FR
• UNIVERSITE DE PARIS XI PARIS SUD · FR

Inventors

• Michel Heninger · Étiolles, FR
• Joël Lemaire · Antony, FR
• Gérard Mauclaire · Gif-sur-Yvette, FR
• Pierre Boissel · Arpajon, FR

Key dates

• Filing date: Aug 2, 2005
• Grant date: Aug 11, 2009
• Expiry date: Sep 12, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J49/38
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A vacuum magnetic ion trap includes an assembly forming a permanent magnet including at least two magnetized structures (30, 32) in the form of hollow cylinders, one convergent radial structure, magnetized along a convergent radial direction, and one divergent radial structure, magnetized along a divergent radial direction, the convergent and divergent radial magnetized structures (30, 32) being arranged along a common longitudinal axis (XX′) The trap also includes a sealed chamber (4) containing anion confinement cell (8) fixed between the at least two magnetized structures (30, 32) and including at least two trapping electrodes (10) connectable to a voltage generator (12).