Phenomena Requiring a Track Model

There is a large body of known radiation-physical and radiation-chemical phenomena, the existence or explanation of which requires a track model. With the exception of the consideration of electron escape (ffee-ion yield), these phenomena 

Chapter 3 Structure of Charged Particle Tracks in Condensed Media 

The areas where the use of the track model has been found particularly expedient are (1) LET variation of product yields in the radiation chemistry of liquids (2) the yield of escaped ions and its variation with particle LET (3) energy loss in primary excitations and ionizations (4) radiation-induced luminescence and (5) particle identification. 

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