Gamma ray sensitivity of R-12 superheated emulsion detector at higher pressure using 241Am and 137Cs gamma sources

Since its discovery in 1979 the Superheated Emulsion Detector (SED) is being used for the detection of energetic radiations e.g. gamma rays, neutrons and other charged particles. In SED a large number of micron size superheated liquid droplets are dispersed in a viscoelastic gel matrix. When a SED is exposed to energetic radiations the droplets may evaporate explosively into bubbles if an energetic particle deposits sufficient amount of energy inside a droplet. In SED the detection of energetic radiation is based on the detection of the acoustic pulse produced during the vaporisation of a superheated liquid droplet