METHOD OF OPERATING AN ION TRAP MASS SPECTROMETER IN A HIGH RESOLUTION MODE

A method of analyzing a sample trapped within a three-dimensional ion trap which includes combined quadrupole and supplementary A.C. fields in which the combined fields are scanned to resonantly eject ions of consecutive mass-to-charge ratio from the trap at a rate so that the length of time corresp...

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Bibliographische Detailangaben
Hauptverfasser: LOURIS, JOHN N, SYKA, JOHN E. P, SCHWARTZ, JAE C
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:A method of analyzing a sample trapped within a three-dimensional ion trap which includes combined quadrupole and supplementary A.C. fields in which the combined fields are scanned to resonantly eject ions of consecutive mass-to-charge ratio from the trap at a rate so that the length of time corresponding to 200 cycles or mor e of the supplementary field occurs per consecutive thomson. A method of analyzing a sample trapped within a three-dimensional ion trap whichincludes combined quadrupole and supplementary A.C. fields in which the combinedfields are scanned to resonantly eject ions of consecutive mass-to-charge ratio from the trap at a rate so that the length of time corresponding to 200 cycles or more of the supplementary field occurs per consecutive thomson.