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Spectroscopy News
Fiber Optic Probe Identifies Hazardous Contaminants
Feb 1, 1997 — WASHINGTON -- Hazardous waste site assessment and remediation are receiving increased attention these days, and a new development from the US Naval Research Laboratory (NRL) should enhance these efforts.A fiber optic infrared reflectance probe that can detect trace amounts of toxic substances in subsurface samples has been developed by a team of NRL researchers with support from the US Army Environmental Center in Aberdeen, Md. The probe, which can detect hydrocarbon concentrations as low as...
Hyperspectral Imager Sends Answers from Above
Feb 1, 1997 — In the Colorado River valley, farmers have been trying to keep crops alive with water that was apportioned by the federal government back in 1923. Unfortunately, the river reached its highest point in a century in 1923, leaving farmers with two...
Photomultiplier Tubes See the Light -- One Photon at a Time
Dec 1, 1996 — Dating archaeological finds, locating schools of fish, measuring food contamination, mapping the stars and monitoring pollution levels are all applications that requirer Raman spectroscopy. This article discusses appropriate optical fibers for each...
Process Control System Produces High Laser Yields
Nov 1, 1996 — ENDICOTT, N.Y. -- A novel process-monitoring and -control system has produced excellent semiconductor laser wafer yields, according to the president of a company that has licensed the technology from the US government. Semiconductor Laser...
System Uses Diffuse Reflectance Spectroscopy to Gauge Wafer Temperature
Nov 1, 1996 — SEATTLE -- Researchers from the University of Washington and the University of British Columbia have developed a noninvasive instrument for precisely measuring the temperature of a semiconductor substrate in real-time. Using a technique called...
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