Radiant energy – Ionic separation or analysis – Methods
Reexamination Certificate
2006-05-25
2009-02-24
Vanore, David A. (Department: 2881)
Radiant energy
Ionic separation or analysis
Methods
C250S281000
Reexamination Certificate
active
07495209
ABSTRACT:
The invention relates to methods and devices for regulating the filling level in measuring cells of ion cyclotron resonance mass spectrometers so that it is optimal for mass resolution and mass accuracy. The invention consists in supplying a fraction of the samples to a second reference mass spectrometer operated in parallel, and employing the mass spectra obtained from this reference mass spectrometer to regulate the filling level in the ion cyclotron resonance mass spectrometer.
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Jeffries,J.B., et al., “Theory of Space-Charge Shift of Ion Cyclotron Resonance Frequencies”, International Journal of Mass Spectrometry and Ion Processes, 1983, pp. 169-187, Issue 54, Elsevier Science Publishers B.V., The Netherlands.
Baykut Gökhan
Berg Christian
Franzen Jochen
Bruker Daltonik GmbH
Law Offices of Paul E. Kudirka
Smyth Andrew
Vanore David A.
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