Cone penetrometer fiber optic raman spectroscopy probe assembly

Details Cone penetrometer fiber optic raman spectroscopy probe assembly Cone penetrometer fiber optic raman spectroscopy probe assembly

1997-07-22

2000-01-25

Hantis, K. P.

Optics: measuring and testing

By dispersed light spectroscopy

With raman type light scattering

G01J 344

Patent

active

060183896

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.

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