A SIFT-MS INSTRUMENT

摘要

The invention described is a method of improving the signal intensity of the precursor ions constrained in a carrier gas in the flow tube of a SlFT-MS instrument. The improved method is the step of applying an electrical potential to the flow tube to lower the diffusive loss of ions within the flow tube. The lowered diffusive loss of ions increases the sensitivity of the technique. An apparatus for carrying out the method is dercribed.