US 9,082,604 B2 · Ion trap mass spectrometer

Abstract

Electrostatic trap mass spectrometers are disclosed that may comprise at least two parallel sets of electrodes separated by a field-free space, wherein said at least two parallel electrode sets extend along a curved Z-direction locally orthogonal to said X-Y plane such that each of said two electrode sets define a volume with a two-dimensional electrostatic field in an X-Y plane and define either planar or torroidal field regions; means for adjusting the torroidal field regions to provide both (i) stable trapping of ions passing between said fields within said X-Y plane and (ii) isochronous repetitive ion oscillations within said X-Y plane such that the stable ion motion does not require any orbital or side motion; and an ion bounding means in the curved Z-direction configured to compensate time-of-flight distortions at Z-edges of the trap.

Claims25

Dependent claims

An electrostatic trap (E-trap) mass spectrometer comprising:

at least two parallel sets of electrodes separated by a field-free space defining a volume with a two-dimensional electrostatic field in an X-Y plane, wherein field provides (a) a stable trapping of ions passing between said fields within the X-Y plane, and (b) isochronous repetitive ion oscillations within the X-Y plane such that stable ions do not require any orbital or side motion, and wherein the electrodes are extended along a generally curved Z-direction locally orthogonal to the X-Y plane to form one of a planar field region or a torroidal field region.

Dependencies are inferred from the claim text.

Ion trap mass spectrometer

Life of this patent

Ion trap mass spectrometer

Life of this patent

Abstract

Claims25