Thermal Regression of Latent Tracks in the Polymer Irradiated by High Energy Heavy Ions

A.I. Vilensky, D.L. Zagorski, P.Yu. Apel, N.V. Pervov, Vladimir Popok, N.N. Melnik, B.V. Mchedlishvili

Research output: Contribution to journalJournal articleResearchpeer-review

11 Citations (Scopus)

Abstract

The influence of heat treatment (85–180 oC) on latent tracks (LTs) in poly(ethylene terephthalate) (PET) films irradiated by Xe ions with energy of 1 MeV/nucleon was studied. The kinetics of the alkaline etching (layer-by-layer
technique) was investigated. Thermal annealing rises the time of through-pore formation. The etching of through pores, investigated by Hagen–Poiseuille and atomic force microscopy (AFM) methods, was found to be nonlinear: steps were
discovered at the etching diagram. They were associated with earlier detected zones of high chemical stability around the track (with the diameters of approximately 10 and 20 nm). Using the AFM method an appearance of surface craters after the irradiation was found. After the annealing the shape of these defects changed to the hillock form. From the analysis of the Raman and electron paramagnetic resonance (EPR) spectra it is supposed that the polymer
structure in the LT area was changed towards carbonaceous phase with graphite-like inclusions, which are evolving under the annealing and affecting the sequential etching process.
Original languageEnglish
JournalNuclear Instruments and Methods in Physics Reseach B
Volume218
Pages (from-to)294-299
Number of pages6
ISSN0168-583X
Publication statusPublished - Jun 2004
Externally publishedYes

Keywords

  • polymer
  • ion implantation
  • radiation damage

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