Cone penetrometer fiber optic raman spectroscopy probe assembly

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:872829

Kyle, Kevin R ^[1]; Brown, Steven B ^[2]

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1. Brentwood, CA
2. Livermore, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 6018389
• OSTI ID: 872829
• Country of Publication: United States
• Language: English

Related Subjects

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
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