A Three-Dimensional Quadrupolar Mass Analyzer. II. Operational Characteristics.
Abstract
The properties of a 3DQ mass analyzer constructed are described. Ion-generation and withdrawal pulses are made coherent with the radio frequency (rf) driving voltage. This allows the rf phase dependence of these events to be measured; in addition, lifetimes of stored ions can be conveniently measured. Representative results of lifetime studies on N2(+) at various background pressures and rf frequencies are given. The maximum intensity and the area of the N2(+) peak are observed as functions of the dc-to-rf voltage ratio, rf frequency, repetition rate of the ionization withdrawal sequence, background pressure, and storage time. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1971
- Accession Number
- AD0729788
Entities
People
- Charles S. Harden
- Peter E. Wagner