The constant neutral linked magnetic field electric sector scan

A linked magnetic field‐electric sector scan for which (B/E){article}{empty}{document}√1 - E{document} is constant selectively records first field free region metastable peaks representing loss of the same neutral fragment. The constant neutral metastable ion spectra produced by this scan should provide information about the presence and location of particular functional groups beyond that which is available from focused mass spectra. Constant neutral linked scans can be obtained consecutively with focused spectra and with B/E and B 2/E linked scans by simple extension of a computerized B‐E scanning method developed previously.