An Ultra Low Level Radionuclide Laboratory to Support the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO)

Ferdinand Steger, Martina Schwaiger, Christian Schmitzer, Thales Schröttner

Publikation: Beitrag in Buch oder TagungsbandVortrag mit Beitrag in TagungsbandBegutachtung


To achieve an end on nuclear testing the Comprehensive Nuclear Test-Ban-Treaty (CTBT) installed an international monitoring system, including 320 stations for hydro-acoustic, seismic, infrasound and radionuclide measurements. To support the radio-nulcide monitoring stations 16 radionuclide laboratories were established - one at the Research Centers Seibersdorf (RL3). For a very low detection limit of 5 µBq.m-³ for 140Ba (537 keV), the RL3 was constructed as an ultra low level laboratory. Therefore the background of a high purity germanium gamma-spectrometer has been reduced by developing a sandwich-stuctured passive shielding combined with an active shielding. The entiere system is encapsulated in an iron-castle and placed into a fall-out shelter. The influence of radon was reduced by the installation of an air-conditioning system. The fianl background count rate over the energy interval from 40 keV to 27000 keV amounts to 0.18 cps/kg germanium. This leads to a reduction factor of approximately 103 compared to the outdoor count rate. Hence, the demanded detection limit for 140Ba will be achieved by using a minimum measurement time of 24 hours.
TitelIRPA Regional Congress "Radiation Protection and Health" IRPA Regional Congress on Radiation Protection in Central Europe RADIATION PROTECTION AND HEALTH, BOOK OF ABSTRACTS
PublikationsstatusVeröffentlicht - 2001
VeranstaltungIRPA Regional Congress "Radiation Protection and Health" -
Dauer: 1 Jan. 2001 → …


KonferenzIRPA Regional Congress "Radiation Protection and Health"
Zeitraum1/01/01 → …

Research Field

  • Biosensor Technologies


  • IRPA
  • Dubrovnik
  • Kroatien
  • Forschungszentrum
  • Seibersdorf
  • ARCS
  • Strahlen
  • Strahlenschutz
  • Radionuklid
  • Labor
  • Radionuklidlabor
  • Croatia
  • Austrian
  • Research
  • Radiation
  • Protection
  • Health
  • Physics
  • Radionuclide
  • Labora


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