Effect of fluence of He+ ions on fluorescence intensity of riphenylmethyl radical

摘要

Fluuorescence band ascribed to the triphenylmethyl radical of TPM (triphenylmentane) and TMPOH (triphenylmethanol) in a polymer film were observed by the simultaneous irradiation with He+ Ions from a 200 keV accelerator and 337 nm light from a nitrogen laser. The intensity of the fluorescence Band of triphenylmethyl radical from TPMOH increased up to 2x10~12 ions/cm~2 and then decreased Gradually. From a preliminary analysis, the radius of the chemical track in a polymer film was estimated To be 3.5 nm from the dependence of the fluorescence intensity of the radical on an ion fluence.