Mercuric Iodide Photodetector

Constellation is developing a mercuric iodide photodetector with dramatically improved detection performance that will lead to the replacement of upgrade of a significant number of portable radiation detectors with a device that is much smaller, more rugged, and more stable under a variety of environmental conditions.  Current scintillation gamma spectrometers use fragile and temperature sensitive photomultiplier tubes.  Constellation is replacing the photomultiplier tubes with a large-area mercuric iodide photodetector that is applicable for most radiation protection and health physics applications.  The mercuric iodide photodetectors will be much smaller, more rugged, and less susceptible to temperature and radio-frequency interference.

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