High resolution gamma ray tomography scanner for flow measurement and non-destructive testing applications.
作者： U. Hampel , A. Bieberle , D. Hoppe , J. Kronenberg , E. Schleicher
DOI: 10.1063/1.2795648
关键词:
摘要: We report on the development of a high resolution gamma ray tomography scanner that is operated with Cs-137 isotopic source at 662 keV photon energy and achieves spatial image 0.2 line pairs/ mm 10% modulation transfer function for noncollimated detectors. It primarily intended scientific study flow regimes phase fraction distributions in fuel element assemblies, chemical reactors, pipelines, hydrodynamic machines. Furthermore, it applicable to nondestructive testing larger radiologically dense objects. The radiation detector based advanced avalanche photodiode technology conjunction lutetium yttrium orthosilicate scintillation crystals. arc comprises 320 single elements which are pulse counting mode. For measurements fixed vessels or plant components, we built computed gantry rotational translational stages, power supply via slip rings, data communication measurement personal computer wireless local area network.
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