The Radiation and Nuclear Safety Authority of Finland (STUK) operates an extensive external radiation monitoring network (USVA) across Finland. The network comprises approximately 260 monitoring stations, of which nearly…
one-tenth are equipped with spectroscopic sensors in addition to standard dose-rate sensors. The current spectroscopic sensors utilize 1.5″ × 1.5″ LaBr₃ detectors coupled with photomultiplier tubes (PMTs) and tube-type multichannel analyzers (MCAs), all housed within aluminum weather shields. STUK
plans to expand the spectroscopic subnetwork by roughly doubling the number of spectrometers and is seeking feedback and input from manufacturers regarding suitable instrumentation for this extension. No final decisions have yet been made o