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Radial electron fluence around ion tracks as a new physical concept for the detection threshold of PADC detector

Abstract : The structure and formation process of latent tracks in poly(allyl diglycol carbonate), PADC, have been examined using the combination of FT-IR spectrometry and a Monte Carlo simulation. The generation amount of OH groups is almost equivalent to the loss amount of ether. An important role of the secondary electron that the carbonyl can be broken only when more than two electrons pass through a single repeat unit is clarified by experiments using low LET radiations. Results of high energy protons lead us to the elucidation of the difference between etchable and un-etchable tracks. Based on these results, a new physical concept of Radial Electron Fluence around Ion Tracks, which is defined as the number density of secondary electron that pass through the cylinder surface with a certain radius is proposed for the detection threshold of PADC using Geant4-DNA. Obtained knowledge is helpful to find appropriate molecule arrangements for new etched track detector with desired sensitivities
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Tamon Kusumoto. Radial electron fluence around ion tracks as a new physical concept for the detection threshold of PADC detector. Chemical Physics [physics.chem-ph]. Université de Strasbourg; Kōbe daigaku (Kōbe), 2017. English. ⟨NNT : 2017STRAE046⟩. ⟨tel-01827527⟩

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