Method for determining in situ the absorption coefficient of particulate media using pulsed laser technique
US4475816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1980 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Feb 15, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/534
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A true indication of a fluid's absorption coefficient takes into effect the contributing factors of absorption and particle multiple scattering. A pulsed optical source transmits radiation through a relatively large volume of a certain particulate fluid medium. A detector or irradiance meter is gated so as to provide waveforms on a monitor which are characteristic of the absorption and multiple scattering of the medium. Using the transmittance and multiple line spread of the received signal a nearly real-time in situ analysis can be performed to provide scientists, communications specialists, etc. with the capability to anticipate operational parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.