Improvements in the procedure for measuring the average lifetime of negative ions on a static mass spectrometer

Abstract

Modifications introduced in an MИ-1201 “B” static mass spectrometer, which allowed one to eliminate basic systematic errors in measurements of lifetimes of negative ions, are described. The measured average lifetimes of negative molecular ions of nitrobenzene derivatives are presented. For comparison, experimental data obtained earlier on time-of-flight mass spectrometers are given.