Title: Determination of 235U Enrichment with a Large Volume CZT Detector
Authors: MORTREAU PATRICIABERNDT REINHARD
Citation: NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH, SECTION A vol. 556 p. 219-227
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2006
JRC N°: JRC30985
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC30985
Type: Articles in Journals
Abstract: Room-temperature CdZnTe and CdTe detectors have been routinely used in the field of Nuclear Safeguards for many years [1] to [11]. Due to their performance and small size, they are ideal detectors for hand-held applications such as verification of spent and fresh fuel, U/Pu attribute tests as well as for the determination of 235U enrichment. The hemispherical CdZnTe type produced by RITEC (Riga, Latvia) [1] is the most widely used detector in the field of inspection. With volumes ranging from 2 mm3 to 1500 mm3, their spectral performance is such that the use of electronic processing to correct the pulse shape is not required. This paper reports on the work carried out with a large volume (15 * 15 * 7.5 mm3) and high efficiency hemispherical CdZnTe detector for the determination uranium-enrichment.. The measurements were made with certified uranium samples whose enrichment ranging from 0.31% to 92.42%, cover the whole range of in-field measurement conditions. The interposed shield thickness varied from 2 mm of aluminium to 16 mm of steel.
JRC Institute:Institute for the Protection and Security of the Citizen

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