Patent ID: 11862451
Assignee: SHIMADZU CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An orthogonal acceleration time-of-flight mass spectrometer, comprising:
an ion ejector configured to eject measurement-target ions in a predetermined direction;
an orthogonal accelerator configured to accelerate ions in a direction orthogonal to the direction in which the ions are ejected;
a ring electrode located between the ion ejector and the orthogonal accelerator, the ring electrode having an opening for allowing ions to pass through and arranged so that a central axis of the opening is shifted from a central axis of the ion ejector in a direction along an axis of acceleration of the ions by the orthogonal accelerator;
a reflectron electrode configured to create a repelling electric field for reversing a direction of the ions accelerated by the orthogonal accelerator; and
an ion detector configured to detect ions after the direction of flight of the ions is reversed by the reflectron electrode.