Fiber optic probe for light scattering measurements

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Description

This invention is comprised of a fiber optic probe and a method for using the probe for light scattering analyses of a sample. The probe includes a probe body with an inlet for admitting a sample into an interior sample chamber, a first optical fiber for transmitting light from a source into the chamber, and a second optical fiber for transmitting light to a detector such as a spectrophotometer. The interior surface of the probe carries a coating that substantially prevents non-scattered light from reaching the second fiber. The probe is placed in a region where the presence and concentration ... continued below

Physical Description

27 p.

Creation Information

Nave, S.E.; Livingston, R.R. & Prather, W.S. January 1, 1993.

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Description

This invention is comprised of a fiber optic probe and a method for using the probe for light scattering analyses of a sample. The probe includes a probe body with an inlet for admitting a sample into an interior sample chamber, a first optical fiber for transmitting light from a source into the chamber, and a second optical fiber for transmitting light to a detector such as a spectrophotometer. The interior surface of the probe carries a coating that substantially prevents non-scattered light from reaching the second fiber. The probe is placed in a region where the presence and concentration of an analyte of interest are to be detected, and a sample is admitted into the chamber. Exciting light is transmitted into the sample chamber by the first fiber, where the light interacts with the sample to produce Raman-scattered light. At least some of the Raman- scattered light is received by the second fiber and transmitted to the detector for analysis. Two Raman spectra are measured, at different pressures. The first spectrum is subtracted from the second to remove background effects, and the resulting sample Raman spectrum is compared to a set of stored library spectra to determine the presence and concentration of the analyte.

Physical Description

27 p.

Notes

OSTI as DE96005167

Source

  • Other Information: PBD: 1993

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  • Other: DE96005167
  • Report No.: PATENTS-US--A8154353
  • Grant Number: AC09-89SR18035
  • Office of Scientific & Technical Information Report Number: 206456
  • Archival Resource Key: ark:/67531/metadc671301

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1993

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Feb. 9, 2016, 5:39 p.m.

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Nave, S.E.; Livingston, R.R. & Prather, W.S. Fiber optic probe for light scattering measurements, text, January 1, 1993; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc671301/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.