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Dipole Field Effects on Ion Ejections from a Paul Ion TrapAttempts at improving the quality of mass spectra obtained from a Paul trap mass spectrometer prompted an investigation of the effects of additional fields to supplement the primary rf quadrupole trapping field. Reported here are the results of the first in a series of tests that focuses on the application of a single dipole field to augment the trapping and subsequent ejections of ions stored within a Paul trap. Measurements are presented for a fixed quadrupole frequency with varying dipole frequencies. The presence of the dipole field during the quadrupole trapping phase causes ion ejections of single m/z species at discrete dipole frequencies. During the mass analysis phase, the varying dipole frequency produces a complex set of resonant structures that impact ejection time (mass range), as well as mass spectral peak intensity and width
Document ID
20150005804
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
MacAskill, J. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Chutjian, A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 17, 2015
Publication Date
July 27, 2011
Subject Category
Astrophysics
Meeting Information
Meeting: International Conference on Photonic, Electronic and Atomic Collisions
Location: Belfast
Country: United Kingdom
Start Date: July 27, 2011
End Date: August 2, 2011
Sponsors: National Univ. of Ireland, Dublin City Univ., Queens Univ., National Univ. of Ireland
Distribution Limits
Public
Copyright
Other
Keywords
dipole
mass spectrometer
quadrupole
three dimensional ion trap

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