Patent ID: 11948788
Assignee: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The apparatus of claim 1, wherein the dual-purpose electron beam generating unit is an electron-based dissociation (ExD) cell, wherein, in the first mode, when the mass spectrometer is in MS/MS mode, the ExD cell receives the analyte ions, fragments the analyte ions using an electron beam, producing product ions, and transmits the product ions to the mass analyzer directly or through the one or more other units for mass analysis and, in the second mode, the ExD cell ionizes a gas of the ExD cell using the electron beam, producing calibrant ions, and transmits the calibrant ions to the mass analyzer directly or through the one or more other units for mass analysis.