Journal ArticleDOI
Mercuric iodide photodetector-cesium iodide scintillator gamma ray spectrometers
TLDR
In this paper, a /sup 137/Cs (662-keV) photopeak resolution of better than 5% FWHM was obtained due to the low noise characteristics and high quantum efficiency of the mercuric iodide photodetector.Abstract:
Scintillation spectrometers with mercuric iodide as the photodetector were evaluated for their spectral response to gamma rays in the energy range of 60 keV to 1332 keV. A /sup 137/Cs (662-keV) photopeak resolution of better than 5% FWHM was obtained due to the low noise characteristics and high quantum efficiency of the mercuric iodide photodetector. Photopeak broadening due to the scintillator, electronic noise, and statistical noise vs. gamma energy are detailed. >read more
Citations
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Room-temperature compound semiconductor radiation detectors
Douglas S. McGregor,Haim Hermon +1 more
TL;DR: A summary of the present status of several compound semiconductor radiation detectors, including detectors fabricated from GaAs, HgI2, CdTe and PbI2 can be found in this paper.
Journal ArticleDOI
Gamma ray spectroscopy with CsI(Tl) scintillator coupled to silicon drift chamber
Carlo Fiorini,Antonio Francesco Longoni,F. Perotti,Claudio Labanti,Peter Lechner,Lothar Strüder +5 more
TL;DR: In this article, a CsI(Tl) scintillator was used to characterize a /spl gamma-ray spectrometer with an energy resolution of 4.4% full-width at half-maximum at room temperature.
Journal ArticleDOI
Initial characterization of a position-sensitive photodiode/BGO detector for PET
S.E. Derenzo,William W. Moses,H.G. Jackson,Bojan T. Turko,J.L. Cahoon,A. B. Geyer,T. Vuletich +6 more
TL;DR: In this article, a position-sensitive photodiode/BGO detector for high-resolution, multilayer positron emission tomography (PET) is presented, where position sensitivity is achieved by dividing the 3 mm*20 mm rectangular photosensitive area along the diagonal to form two triangular segments.
Journal ArticleDOI
Prospects of CsI(Tl)-photodiode detectors for low-level spectroscopy
TL;DR: In this article, a detailed study of the potential of CsI(Tl) photodiode detectors for applications in low-level spectroscopy was carried out, and the use of new large-area low-capacitance pin Si photodiodes led to a significantly improved energy precision of ΔE (FWHM) = 150 keV, nearly independent of energy.
Prospects of CsJ(Tl)-photodiode detectors for low level spectroscopy
U. Kilgus,R. Kotthaus,E. Lange +2 more
TL;DR: In this article, a detailed study of the potential of CsI(Tl) photodiode detectors for applications in low-level spectroscopy was carried out, and the use of new large-area low-capacitance pin Si photodiodes led to a significantly improved energy precision of ΔE (FWHM) = 150 keV, nearly independent of energy.
References
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Journal ArticleDOI
Recent Measurements on Scintillator-Photodetector Systems
TL;DR: In this paper, the pulse height distributions from eleven kinds of scintillators coupled with a photomultiplier (PMT) and with a silicon photodiode were measured for gamma-ray energies between 14 keV and 1836 keV.
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Review of mercuric iodide development program in Santa Barbara
TL;DR: In this article, a review of the growth and fabrication of mercuric iodide is presented, especially with respect to the spectral response of detectors with thicknesses of 1 cm or more.
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Silicon photodiode detection of bismuth germanate scintillation light
TL;DR: In this paper, the authors focused on noise limitations in the photodiode/amplifier combination for the readout of bismuth germanate crystals (BGO), with the eventual achievement of a noise-limited resolution of 325 keV (standard deviation).
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IMPROVEMENTS IN PHOTODIODE READOUT FOR SMALL CsI(Tl) CRYSTALS
TL;DR: In this paper, measurements of photon energy resolution in the region around 1 MeV with a small CsI(Tl) photodiode detector were presented, where the authors used a small Tl detector to detect the photon energy.
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Gamma-ray spectroscopy using small, cooled bismuth germanate scintillators and silicon photodiodes
TL;DR: In this paper, the authors measured the gamma-ray scintillation spectra using a 3 × 3 ×3 × 3 mm 3 bismuth germanate (BGO) crystal and a 4 mm diam. silicon photodiode at temperatures from +20°C to −190°C.