Zobrazeno 1 - 10
of 215
pro vyhledávání: '"J.S. Iwanczyk"'
Publikováno v:
Radiation Detection Systems ISBN: 9781003147633
Radiation Detection Systems ISBN: 9781003219446
Radiation Detection Systems ISBN: 9781003219446
This chapter discusses the development of innovative room-temperature x-ray semiconductor detector technologies based on cadmium telluride (CdTe) and cadmium zinc telluride (CZT) pixellated arrays electrically connected to application specific integr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20260c16c0657f180c6331405118df1f
https://doi.org/10.1201/9781003147633-3
https://doi.org/10.1201/9781003147633-3
Autor:
Soraia Azeredo, Angel Bustamante, Marcelino dos Anjos, Joaquim Teixeira de Assis, Roberto Cesareo, RicardoT. Lopes, J.S. Iwanczyk
Publikováno v:
Microchemical Journal. 155:104720
In many cases, the differentiation between an artefact on gold alloy, or on tumbaga (the last being a poor gold alloy subject to depletion gilding), and, sometimes, on gilded copper, is not easy. Their aspect is often similar, and energy-dispersive X
Publikováno v:
IEEE Transactions on Nuclear Science. 56:1810-1816
We have created high-resolution x-ray imaging devices using polycrystalline mercuric iodide (HgI(2)) films grown directly onto CMOS readout chips using a thermal vapor transport process. Images from prototype 400x400 pixel HgI(2)-coated CMOS readout
Publikováno v:
IEEE Transactions on Nuclear Science. 56:1012-1016
We have fabricated thin films of polycrystalline mercuric iodide for use as photodetectors coupled to cesium iodide scintillators. The compound semiconductor mercuric iodide has a large band gap (2.13 eV) causing a peak in its quantum efficiency (570
Autor:
C.N. Brzymialkiewicz, Marques L. Bradshaw, Martin P. Tornai, J. Li, James E. Bowsher, J.S. Iwanczyk, Bradley E. Patt, L.R. MacDonald
Publikováno v:
IEEE Transactions on Nuclear Science. 52:1251-1256
In an effort to image smaller breast lesions, two compact gamma cameras with different intrinsic NaI(Tl) pixel sizes are evaluated for use in the application specific emission tomography system for mammotomographic emission imaging. Comparison measur
Publikováno v:
IEEE Transactions on Nuclear Science. 51:1812-1816
Mercuric iodide (HgI/sub 2/) polycrystalline films have great potential as direct-conversion X-ray detectors for digital X-ray imaging. We have optimized a sublimation-based film growth process to create uniform films up to 6.5 /spl times/ 6.5 cm/sup
Publikováno v:
IEEE Transactions on Nuclear Science. 51:1803-1807
Thick silicon multicathode detectors (SMCDs) for high efficiency X-ray detection have been designed, fabricated, and tested. These thick detectors (up to 1.5 mm thick) extend the practical X-ray detection range from the current level of /spl sim/20 k
Publikováno v:
IEEE Transactions on Nuclear Science. 50:2470-2473
Vortex/spl trade/ is a multicathode drift-type X-ray detector produced from high-purity silicon using state-of-the-art CMOS production technology . Based on the Vortex/spl trade/ detector, we have developed a compact detector package for X-ray diffra
Autor:
N. Egorov, V. K. Eremin, A. Sidorov, Alexander Ivanov, Nikita B. Strokan, E. M. Verbitskaya, Bradley E. Patt, I. Ilyashenko, C.R. Tull, K. Konkov, G. Vilkelis, S. Golubkov, J.S. Iwanczyk
Publikováno v:
IEEE Transactions on Nuclear Science. 50:1225-1228
We have developed a new silicon photodiode design that reduces the dark current and can improve the sensitivity of low noise silicon photodetector arrays for medical imaging applications. The reduction in dark current eliminates the need for cooling,
Publikováno v:
IEEE Transactions on Nuclear Science. 50:80-86
Methods of tiling scintillator-photodiode detector arrays were investigated. Si PIN photodiodes coupled to CsI(Tl) scintillation crystals are being considered for high-resolution (/spl sim/1 mm) gamma-ray imaging. Large area (/spl sim/200 cm/sup 2/)