The Frisker (Ludlum 26-1) is described as detecting which radiation and used for decon?

• A. Only alpha
• B. Only gamma
• C. Alpha, Beta, Gamma
• D. Neutron only

Answer: (C)

The Frisker 26-1 is designed for surface contamination surveys and is built to detect all three common types of radiation that can be present on surfaces: alpha, beta, and gamma. Its thin window and sensitive detector allow alpha particles emitted from a contaminated surface to enter and be detected, while beta particles emitted close to the surface can also be picked up, and gamma rays, which can penetrate materials, are detected as well. This combination makes it particularly useful for decon (decontamination) work because you can quickly locate hotspots and guide cleaning. It does not detect neutrons, which require different detectors (such as neutron-specific tubes or scintillators), so neutron measurement is not within its capabilities.