About this Chemistry article
In Situ Optimization of the Electrode Geometry of the Quadrupole Ion Trap by Lynn A Gill; Jonathan W Amy; Weldon E Vaughn; R.Graham Cooks is a Chemistry article available to read on EtoBox.
The performance of the quadrupole ion trap is affected by imperfections in the quadrupolar electric fields used to trap the ions. These effects can be compensated for by stretching the trap along its axis. A systematic investigation of the effects of stretching and compressing the z 0 dimension of the ion trap under operating conditions shows improvement in resolution and signal intensity if the z 0 dimension if the quadrupole ion trap is stretched by 9%, with respect to the value for the nominally pure quadrupolar trap. A plot of the relationship between the mass shift for the nitrobenzene molecular ion and z 0 is also presented. It shows that the shift drops to zero at the geometry at which the performance is optimized. (
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- Author
- Lynn A Gill; Jonathan W Amy; Weldon E Vaughn; R.Graham Cooks
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1387-3806)
- Published
- 1999
- Language
- EN
- Field
- Chemistry (Physical Sciences)