High Energy Ionization in Liquids — The Free Ion Yield
Ionizations can be produced in liquids in many ways, for example by exposure to high energy radiation (fast electrons or alphas) or by interaction with ultraviolet photons of sufficient energy. The passage of a high energy electron results in well separated clusters, each containing a few ionizations or in the case of alpha particles a dense column of ionization. Absorption of ultraviolet light creates a single ion-electron pair. In any case only a fraction of the ion-electron pairs formed initially separate to become free; in most liquids recombination within the track or cluster dominates. The yield of ion electron pairs that separate and become free depends on several factors including the molecular structure of the solvent, the density of ionization along the track, the liquid density, the applied field and the temperature1.
KeywordsAlpha Particle High Energy Electron Electron Attachment High Energy Radiation Charge Sensitive Amplifier
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