Radiant energy – Ionic separation or analysis – Methods
Patent
1994-10-24
1996-04-02
Berman, Jack I.
Radiant energy
Ionic separation or analysis
Methods
250287, H01J 4940
Patent
active
055043267
ABSTRACT:
An apparatus and method for minimizing ion peak width measurements in a time-of-flight mass spectrometer to thereby minimize the effects of initial ion position distributions and initial ion velocity distributions on the mass resolution of the spectrometer are provided. Where the ion source and ion generation geometries indicate a functional relationship between the initial ion position and initial ion velocity, this relationship is substituted into the time-of-flight equation and the instrument parameters are thereafter optimized to achieve minimization of ion peak width broadening. Experimental results using MALDI indicate reductions in ion peak widths of up to 96% over those observed with traditional MALDI techniques.
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Colby Steven M.
King Timothy B.
Reilly James P.
Berman Jack I.
Indiana University Foundation
Nguyen Kiet T.
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