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Title: Cone penetrometer fiber optic raman spectroscopy probe assembly

Abstract

A chemically and mechanically robust optical Raman spectroscopy probe assembly that can be incorporated in a cone penetrometer (CPT) for subsurface deployment. This assembly consists of an optical Raman probe and a penetrometer compatible optical probe housing. The probe is intended for in-situ chemical analysis of chemical constituents in the surrounding environment. The probe is optically linked via fiber optics to the light source and the detection system at the surface. A built-in broadband light source provides a strobe method for direct measurement of sample optical density. A mechanically stable sapphire window is sealed directly into the side-wall of the housing using a metallic, chemically resistant, hermetic seal design. This window permits transmission of the interrogation light beam and the resultant signal. The spectroscopy probe assembly is capable of accepting Raman, Laser induced Fluorescence, reflectance, and other optical probes with collimated output for CPT deployment.

Inventors:
 [1];  [2]
  1. (Brentwood, CA)
  2. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872829
Patent Number(s):
6018389
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
cone; penetrometer; fiber; optic; raman; spectroscopy; probe; assembly; chemically; mechanically; robust; optical; incorporated; cpt; subsurface; deployment; consists; compatible; housing; intended; in-situ; chemical; analysis; constituents; surrounding; environment; optically; linked; via; optics; light; source; detection; surface; built-in; broadband; provides; strobe; method; direct; measurement; sample; density; stable; sapphire; window; sealed; directly; side-wall; metallic; resistant; hermetic; seal; design; permits; transmission; interrogation; beam; resultant; signal; capable; accepting; laser; induced; fluorescence; reflectance; probes; collimated; output; mechanically stable; assembly consists; surrounding environment; source provides; direct measurement; optical density; resultant signal; spectroscopy probe; chemical analysis; probe assembly; fiber optics; light source; fiber optic; light beam; optical probe; hermetic seal; laser induced; raman spectroscopy; seal design; direct measure; induced fluorescence; collimated output; mechanically robust; via fiber; in-situ chemical; band light; cone penetrometer; /356/

Citation Formats

Kyle, Kevin R., and Brown, Steven B. Cone penetrometer fiber optic raman spectroscopy probe assembly. United States: N. p., 2000. Web.
Kyle, Kevin R., & Brown, Steven B. Cone penetrometer fiber optic raman spectroscopy probe assembly. United States.
Kyle, Kevin R., and Brown, Steven B. Sat . "Cone penetrometer fiber optic raman spectroscopy probe assembly". United States. https://www.osti.gov/servlets/purl/872829.
@article{osti_872829,
title = {Cone penetrometer fiber optic raman spectroscopy probe assembly},
author = {Kyle, Kevin R. and Brown, Steven B.},
abstractNote = {A chemically and mechanically robust optical Raman spectroscopy probe assembly that can be incorporated in a cone penetrometer (CPT) for subsurface deployment. This assembly consists of an optical Raman probe and a penetrometer compatible optical probe housing. The probe is intended for in-situ chemical analysis of chemical constituents in the surrounding environment. The probe is optically linked via fiber optics to the light source and the detection system at the surface. A built-in broadband light source provides a strobe method for direct measurement of sample optical density. A mechanically stable sapphire window is sealed directly into the side-wall of the housing using a metallic, chemically resistant, hermetic seal design. This window permits transmission of the interrogation light beam and the resultant signal. The spectroscopy probe assembly is capable of accepting Raman, Laser induced Fluorescence, reflectance, and other optical probes with collimated output for CPT deployment.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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