Abstract
A micro-Faraday array detector (row of miniature 32 thin film strip electrodes wire bonded to an on-chip integrated capacitance transimpedance amplifier) was tested for use in a multiple collector secondary ion mass spectrometry. The detector was mounted on a standard IMS3f SIMS instrument in place of a microchannel plate. The measurements were performed by using a silicon sample bombarded by either O+2 or Cs+ primary ions with or without D2O flooding and detecting secondary ions of Si±, SiH±, O-, SiD-, OD-. A parallel detection of near masses of 29Si and 28SiH or 18O and 16OD was demonstrated at a sensitivity level ~230 counts/s.
Original language | English (US) |
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Pages (from-to) | 1050-1057 |
Number of pages | 8 |
Journal | Analytical Letters |
Volume | 44 |
Issue number | 6 |
DOIs | |
State | Published - Apr 2011 |
Externally published | Yes |
Keywords
- Capacitance transimpedance amplifier
- Faraday cup
- Ion detection
- SIMS
ASJC Scopus subject areas
- Analytical Chemistry
- Biochemistry
- Spectroscopy
- Clinical Biochemistry
- Biochemistry, medical
- Electrochemistry