TIME-OF-FLIGHT MASS SPECTROMETER AND TUNING METHOD FOR THE SAME

Provided is a TOFMS having a measurement unit in which target ions are accelerated and sent into a flight space within which an electric field for causing ions to fly is created. A data-analysis processor (33) creates a spectrum based on data acquired by the measurement unit, where the spectrum show...

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Bibliographic Details
Main Authors Oshiro, Tomoyuki, UCHIYAMA, Kosuke
Format Patent
LanguageEnglish
Published 30.11.2023
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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Summary:Provided is a TOFMS having a measurement unit in which target ions are accelerated and sent into a flight space within which an electric field for causing ions to fly is created. A data-analysis processor (33) creates a spectrum based on data acquired by the measurement unit, where the spectrum shows a relationship between ion intensity and time-of-flight or m/z value. An index calculator (34) calculates, as an index concerning a peak in the spectrum, a time-of-flight or m/z-value difference between a midpoint of a first peak width at an intensity which equals the peak-top intensity multiplied by a first ratio and a midpoint of a second peak width at an intensity which equals the peak-top intensity multiplied by a second ratio smaller than the first ratio. An evaluation result storage section (35) evaluates the peak symmetry from the index and stores an evaluation result.
Bibliography:Application Number: US202318194069