Space charges in ethylene-styrene copolymers irradiated by low-dose gamma rays

Yasuhiro Tanaka, Yuuichi Mita, Yoshimichi Ohki, Hiroshi Yoshioka, Masaaki Ikeda, Fumihiko Yazaki

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Space charges in ethylene-styrene copolymers irradiated by low dose gamma -rays were studied from the results of DC conduction, thermal pulse current, thermally stimulated current and residual voltage measurements. The number of carriers induced by gamma -rays and escaping from recombination becomes smaller with an increase in styrene content. The reason for this is thought to be that styrene absorbs the energy of electrons and increases the average energy necessary for ionization. The relationship between gamma -induced space charges and the morphological state of styrene is also studied in three kinds of polymers (random and graft copolymers and polymer blend). It can be said that styrene must be dispersed uniformly and bonded with ethylene in order to fully utilize the electron energy absorption effect of a benzene ring.

本文言語English
ページ(範囲)1491-1496
ページ数6
ジャーナルJournal of Physics D: Applied Physics
23
12
DOI
出版ステータスPublished - 1990 12月 14

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 音響学および超音波学
  • 表面、皮膜および薄膜

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