Patent ID: 11881387
Assignee: MICROMASS UK LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of time-of-flight (TOF) mass spectrometry comprising:
pulsing a plurality of packets of ions into a time of flight region such that they separate according to mass to charge ratio as they travel towards an ion converter;
receiving the ions from different ion packets at the ion converter over different respective time periods;
converting the ions into secondary particles at the ion converter;
attenuating the secondary particles that are generated during the different time periods by different respective amounts and/or rates, wherein the amount and/or rate of attenuation is maintained substantially constant during each of the time periods; and then
detecting the attenuated secondary particles so as to obtain mass spectral data for the ions.