Study of annihilation processes of positrons in polystyrene-related polymers

Y. Honda, T. Shimada, M. Tashiro, N. Kimura, Y. Yoshida, G. Isoyama, S. Tagawa

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The positrons injected into a polymer annihilate with electrons through several kinds of processes influenced by environmental conditions. The AMOC is an appropriate method to investigate the influences of functional groups in polymer on positron and positronium annihilation process. The experiments were performed for polystyrene-related materials. The results showed that the S-parameters relating to ortho-positronium were higher than those relating to free annihilation in all samples and the annihilation process was affected by functional group.

Original languageEnglish
Pages (from-to)169-171
Number of pages3
JournalRadiation Physics and Chemistry
Issue number2
Publication statusPublished - 2007 Feb


  • AMOC
  • Poly(4-bromostyrene)
  • Poly(4-chlorostyrene)
  • Poly(4-vinylphenol)
  • Polystyrene
  • Polyvinyltoluene
  • Positron
  • Positronium


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