A fluorescent gated imaging gas scintillation spectrometer for high energy X-ray astronomy

Details A fluorescent gated imaging gas scintillation spectrometer for high energy X-ray astronomy A fluorescent gated imaging gas scintillation spectrometer for high energy X-ray astronomy

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981itns...28..861t&link_type=abstract

(IEEE, DOE, NASA, and NBS, Nuclear Science Symposium, 27th, Orlando, Fla., Nov. 5-7, 1980.) IEEE Transactions on Nuclear Science

Astronomy and Astrophysics

Astronomy

6

Energy Spectra, Gates (Circuits), Proportional Counters, Scintillation Counters, X Ray Astronomy, X Ray Imagery, Energetic Particles, Fluorescence, Gas Detectors, Photoabsorption, Position Sensing, Spectral Resolution

Scientific paper

Results are presented on the development of a position sensitive gas scintillation proportional counter for use in high energy X-ray astronomy. This detector has a higher background rejection efficiency and a better energy resolution above 35 keV than conventional gas scintillators, gas proportional counters and crystal scintillators. These improvements arise directly from the application of a discrimination technique which makes use of the detection of the fluorescent xenon K shell photon emitted in most interactions involving the photoabsorption of genuine X-rays with energies greater than the K shell binding energy. Detectors incorporating this technique, and also having a position sensing capability to reject the induced Compton electron background from the detector walls, will provide unique information on the spectral characteristics of cosmic X-ray sources.

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