Simultaneous multi-elements analysis type X-ray fluorescence spectrometer, and simultaneous multi-elements X-ray fluorescence analyzing method
US10883945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2017 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Feb 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/6116
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A simultaneous multi-elements analysis type X-ray fluorescence spectrometer according to the present invention includes: a sample table (2) on which a sample (1) is placed and a conveyance arm (22) for the sample (1). The sample table (2) has a cutout (2e) formed therein, through which the conveyance arm (22) is allowed to pass in a vertical direction. Regarding respective measurement points (Pn) on a blank wafer (1b), a background correction unit (21) previously stores, as background intensities at the measurement points (Pn), intensities obtained by subtracting a measured intensity at a reference measurement point (P0) located above the cutout (2e) from each of measured intensities at the measurement points (Pn), and regarding respective measurement points (Pn) on an analytical sample (1a), the background correction unit (21) subtracts the background intensities at the measurement points (Pn) from measured intensities at the measurement points (Pn), thereby correcting background.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.