Laser ablation analysis techniques
US10222337B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2017 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Apr 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods for laser induced ablation spectroscopy are disclosed. A position sensor, and position motors can move a sample stage in three independent spatial coordinate directions, and a stage position control circuit can move an analysis sample site to selected coordinate positions for ablation. Light from laser ablation can be gathered into a lightguide fiber bundle that is subdivided into branches. One branch can convey a first portion of the light to a broadband spectrometer operable to analyze a relatively wide spectral segment, and a different branch can convey a second portion of the light to a high dispersion spectrometer operable to measure minor concentrations and/or trace elements. Emissions can be simultaneously analyzed in various ways using a plurality of spectrometers having distinct and/or complementary capabilities, and isotope analysis of a sample can be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.