LiBS analyzer sample presence detection system and method
US9970815B2 · kind B2 · utility
1Cited by
21References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 11, 2017 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Apr 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/069
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A LIBS analyzer and method includes a laser configured to produce a plasma on a sample at a focal point on the sample and a spectrometer responsive to radiation emitted from the plasma and configured to produce an output spectrum. A detector is positioned to detect low intensity pre-firing radiation produced by the laser and reflected off the sample from the focal point. The intensity of the low intensity pre-firing radiation is compared to a predetermined minimum and the laser pump sequence is halted if the intensity of the low intensity pre-firing radiation is less than the predetermined minimum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.