Saturation correction for ion signals in time-of-flight mass spectrometers
US11373848B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 28, 2015 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Aug 28, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to time-of-flight mass spectrometers in which individual time-of-flight spectra are measured by detection systems with limited dynamic measurement range and are summed to sum spectra. The invention proposes a method to increase the dynamic range of measurement of the spectrum. To achieve this, those ion signals whose measured values display saturation of the analog-to-digital converter (ADC) are replaced by correction values, particularly if several successive measured values are in saturation. The correction values are obtained from the width of the signals, preferably simply from the number of measured values in saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.