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Abstract

IRMM performs ultra low-level gamma-ray spectrometry in the underground laboratory HADES, located at the SCK-CEN site in Mol, Belgium. Recently a third low-background coaxial HPGe detector was put into operation. The detector has 60% relative efficiency with better background characteristics than the two previous detectors. The shield comprises 14 cm of lead with 210Pb specific activity of 20 Bq kg-1 and 14 cm of freshly produced electrolytic copper. The background count rate integrated from 40 to 2700 keV is 394 +/- 2 counts per day. Details of the background and the shield are presented together with applications to nuclear safeguards and material selection.

Additional information

Authors: HULT M, EC-JRC-IRMM, Geel (BE);MARTINEZ CANET M J, EC-JRC-IRMM, Geel (BE);KÍHLER M, EC-JRC-IRMM, Geel (BE);DAS NEVES J, EC-JRC-IRMM, Geel (BE);JOHNSTON P N, EC-JRC-IRMM, Geel (BE)
Bibliographic Reference: Article: Applied Radiation and Isotopes, Vol. 53 (2000) pp. 225-229
Availability: Applied Radiation and Isotopes (Journal)
Record Number: 200012259 / Last updated on: 2000-08-10
Category: PUBLICATION
Original language: en
Available languages: en