About this Chemistry article
Digital Asymmetric Waveform Isolation (DAWI) in a Digital Linear Ion Trap by Francesco L. Brancia; Bryan McCullough; Andrew Entwistle; J. Günter Grossmann; Li Ding is a Chemistry article available to read on EtoBox.
Traditionally, in a quadrupole mass filter, ion isolation is achieved by scanning the rf and DC voltages with a fixed ratio. In this paper, we describe an innovative procedure implemented in a digitally driven linear ion trap termed digital asymmetric waveform isolation (DAWI) in which ion isolation is obtained by manipulation of the duty cycle of the rectangular waveforms. Variation of the waveform duty cycle allows introduction of a precisely defined DC quadrupole component into the main trapping field of the quadrupole ion filter. The DAWI method is completely controlled at software level and does not require any hardware modification.
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- Author
- Francesco L. Brancia; Bryan McCullough; Andrew Entwistle; J. Günter Grossmann; Li Ding
- Publisher
- Elsevier Science; Springer-Verlag; Springer New York LLC; American Chemical Society (ACS); Springer Science and Business Media LLC; Elsevier BV (ISSN 1044-0305)
- Published
- 2010
- Language
- EN
- Field
- Chemistry (Physical Sciences)