Penning-trap mass spectrometer

Penning-trap mass spectrometer

[¦pen·iŋ‚trap ‚mas spek′träm·əd·ər]
(engineering)
A device for making highly accurate comparisons of the masses of charged atoms and molecules by comparing the cyclotron frequencies of single ions in a Penning trap.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.