This lesson covers nucleonic instrumentation: measurement using radioactive sources (alpha, beta, gamma, neutron radiation, each characterized by ionization power, penetration depth, and energy) and detectors (gas ionization chambers, proportional counters, Geiger-Müller counters, scintillation counters, solid-state detectors), governed by an exponential attenuation law relating transmitted radiation intensity to an absorption coefficient dependent on atomic weight and density. It extends this to non-invasive industrial measurement of density, level, thickness, and coating in sealed or inaccessible systems, and to nuclear medicine, where internal radioactive tracers (rather than external radiography sources) are imaged via scintillation-detector arrays (gamma camera, SPECT, PET) to assess organ function. The domain is radiation-based instrumentation, used as an alternative to acoustic (ultrasonic) sensing when the latter cannot propagate through the medium.
This lesson covers nucleonic instrumentation: measurement using radioactive sources (alpha, beta, gamma, neutron radiation, each characterized by ionization power, penetration depth, and energy) and …