Resolution and Mass Range Performance in Distance-of-Flight Mass Spectrometry with a Multichannel Focal-Plane Camera Detector
Distance-of-flight mass spectrometry (DOFMS) is a velocity-based mass-separation technique in which ions are separated in space along the plane of a spatially selective detector. In the present work, a solid-state charge-detection array, the focal-plane camera (FPC), was incorporated into the DOFMS platform. Use of the FPC with our DOFMS instrument resulted in improvements in analytical performance, usability, and versatility over a previous generation instrument that employed a microchannel-plate/phosphor DOF detector. Notably, FPC detection provided resolution improvements of at least a factor of two, with typical DOF linewidths of 300 {micro}m (R(FWHM)=1000). Merits of solid-state detection for DOFMS are evaluated and methods to extend the DOFMS mass range are considered.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1030452
- Report Number(s):
- PNNL-SA-83410; TRN: US201124%%213
- Journal Information:
- Analytical Chemistry, Vol. 83, Issue 22
- Country of Publication:
- United States
- Language:
- English
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