Luminescence detectors

Room-temperature fluorescence (RTF) has been used to determine the emission characteristics of a wide variety of materials relative to the wavelengths of selected Fraunhofer lines in support of the Fraunhofer luminescence detector remote-sensing instrument. RTF techniques are now used in the compilation of excitation-emission-matrix (EEM) fluorescence "signatures" of materials. The spectral data are collected with a Perkin-Elraer MPF-44B Fluorescence Spectrometer interfaced to an Apple 11+ personal computer. EEM fluorescence data can be displayed as 3-D perspective plots, contour plots, or "color-contour" images. The integrated intensity for selected Fraunhofer lines can also be directly extracted from the EEM data rather than being collected with a separate procedure. Fluorescence, chemical, and mineralogical data will be statistically analyzed to determine the probable physical and/or chemical causes of the fluorescence. 

This paper describes the luminoscope, a simple laboratory-constructed, portable luminescence detector designed specifically for monitoring occupational skin contamination. The instrument design is based upon a fiberoptics waveguide. The instrument is suitable for detecting trace amounts of various coal tars and has recently been field tested at a coal conversion facility. 

Vo-Dinh, T. Design and Evaluation of a Fiberoptics Based Luminescence Detector (to be published). 

Sensitivity may be improved using single-photon counters as luminescence detectors. 

This is a technical question I noticed you had a chemi-luminescent detector in the kit on your flight instruments for detection of NO. At one time you were using resonance fluorescence I was curious what happened in the volution of that system. 

Bioluminescence was measured by a chemi-luminescence detector or our newly developed onsite monitoring system using a digital camera. The data were transferred to a (mobile) PC machine with a snaart media card device. Luminescent intensity was numerated by black and white scale using Scionimage soft. 

Casado-Terrones, S., Fema ndez-Sa nchez, J. F., Segura-Carretero, A., Ferna ndez-Gutie rrez, A. (2007). Simple luminescence detectors using a light-emitting diode or a Xe lamp, optical fiber and charge-coupled device, or photomultiplier for determining proteins in capallaiy electrophoresis A critical comparison. Anal. Biochem. 365, (February 2007), pp. 82-90, ISSN 10.1016. 

Instruments for measuring ionized radiation typically include a sensing device and a readout device. Some are usefiil for field measurement whereas other combinations come in small packages useful for dosimetry. Sensors are very critical. Different types of radiation require different types of sensors. Sensors include Geiger-MueUer tubes (used in Geiger counters), ionization chambers, luminescent detectors, scintillation detectors, and photographic emulsions. 

Luminescence detectors most widely used in flow techniques are those commonly available in the laboratory, which are adapted by using an appropriate flow cell. 

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