LAUSR

Abstract Sufficient amount of energy deposition through the energetic particles initiate bubble nucleation in the superheated liquid by producing the critical sized vapor bubble and subsequent growth of the bubble occurs by emitting the acoustic energy. The sensitive region of bubble nucleation changes by controlling the reduced superheat of the superheated liquid. The electrons sensitivity arises at higher reduced superheat as compared to the recoil nuclei. In the present work, we have observed the discrimination between the acoustic energy released due to both the recoil nuclei and electrons induced nucleation in superheated liquids like R-134a (containing the low Z nuclei) and in R-12 (of high Z nuclei). The experimental results show opposite trend in the two liquids. The experimental results are explained by the thermodynamic calculation and by the calculation of energy deposition of the recoil nuclei and electrons in the liquid.