Positrons and positronium in macromolecules: Consequences of different charge states

Yoshinori Kobayashi*, Kiminori Sato, Masato Yamawaki, Koji Michishio, Toshitaka Oka, Masakazu Washio

*この研究の対応する著者

研究成果: Article査読

抄録

Because of their different charge states, positrons and positronium (Ps) behave quite differently in macromolecules. The behavior of positively charged positrons is strongly influenced by electrostatic interactions. In nonpolar macromolecules such as polyethylene, energetic positrons, if not incorporated into Ps, fall into a delocalized state. These positrons are sensitively trapped by polar groups, if any. On the other hand, charge-neutral Ps is localized in a free volume regardless of the macromolecule's chemical structure. In this study, we discuss the behavior and annihilation characteristics of positrons and Ps in various macromolecules, emphasizing their differences.

本文言語English
論文番号110590
ジャーナルRadiation Physics and Chemistry
202
DOI
出版ステータスPublished - 2023 1月

ASJC Scopus subject areas

  • 放射線

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