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Correlating Excitation and Emission Wavelengths Yields Analysis of Complex Chemical Environments

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Lynn M. Savage

Spectroscopically scrutinizing chemicals within complex environments — such as inside cometary matter or combustible materials — is challenging because many molecules absorb and emit at similar wavelengths, confounding spectral analysis. Laser-induced fluorescence spectroscopy is frequently used because of its high sensitivity and resolution, but it is limited in that it provides only a single dimension of analysis, based on either excitation or emission spectra. Now researchers at the University of Sydney in Australia, led by Timothy W. Schmidt and Scott H. Kable, have developed a...Read full article

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    Published: January 2007
    Glossary
    laser-induced fluorescence spectroscopy
    A pump-probe technique whereby a single wavelength source may be used in order to excite a given sample to determine electronic transitions.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    Basic Sciencechemicalscombustible materialsemission spectraFeatureslaser-induced fluorescence spectroscopyphotonics

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