Gamma detectors for tomographic flow imaging

Johansen, Geir Anton; Frøystein, T.

doi:10.1016/0955-5986(94)90004-3

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…There is another advantage of reducing the radiation energy since the reduced radiation penetration depth also enables the use of smaller and more compact detectors. This is important in γ -ray tomography because the detectors need to be tightly stacked in arrays [9]. For this reason CdZnTe semiconductor detector technology, which also has undergone substantial improvements in recent years, was used in this project [10,11].…”

Section: Accuracy Versus Safetymentioning

confidence: 99%

A dual sensor flow imaging tomographic system

Johansen

Frøystein

Hjertaker

et al. 1996

Meas. Sci. Technol.

120

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A dual sensor tomograph for three-component flow imaging has been built at the University of Bergen in cooperation with Christian Michelsen Research AS and Norsk Hydro AS. It utilizes an eight-electrode electrical capacitance tomograph and a γ-ray tomograph with five radiation sources and 85 compact detectors. Embedded transputers using memory-mapped I/O ensure high-speed data acquisition into an Alpha AXP-based on-line processing unit. The first results demonstrate that three-component flow regime identification is possible at rates of about 30 frames per second, provided that sufficient computing capability is available.

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Section: Accuracy Versus Safetymentioning

confidence: 99%