Standardization of spectral lines
US4893259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1988 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Jun 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2869
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for standardizing spectral line intensities in a spectral monochromator separate an input beam into a sample spectral line characteristic of a sample element, a reference spectral line, a standard spectral line and a background spectral band. At a first point in time an intensity I.sub.A of the sample line, a first intensity I.sub.R1 of the reference line and a first intensity I.sub.B1 of the background band are measured. At a second point in time an intensity I.sub.S of the standard line, a second intensity I.sub.R2 of the reference line and a second intensity I.sub.B2 of the background band are measured. An intensity ratio IR defined by the formula ##EQU1## is computed wherein the intensity ratio IR represents a standardized intensity of the sample line compensated for source fluctuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.