Space charges induced in polymers by electron beam irradiation and their decay profiles

Naoto Tomite, Yukitaka Arai, Yoshimichi Ohki, Hirotaka Nakmura, Toru Hinata, Masakazu Washio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Electrons were irradiated to low-density polyethylene (LDPE), polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and syndiotactic polystyrene (SPS). Many electrons were back scattered and large numbers of electrons and holes were generated in the film by ionization. Since the amount of negative charge observed under short-circuit after the irradiation is significantly smaller than the electron fluence, most electrons and holes generated by the irradiation were either recombined or transported to the electrodes. The amount of negative charge gradually decreases monotonically, showing the order of the decay speed, PI > LDPE > PET > SPS > PEN. The conductivity also shows the same order. When a dc voltage is applied to the sample, in which electrons and holes were generated abundantly by ionization, the electric field is enhanced significantly at the two electrodes due to the presence of positive charge near the cathode and negative charge near the anode.

Original languageEnglish
Title of host publicationICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
Pages736-739
Number of pages4
DOIs
Publication statusPublished - 2013 Dec 1
EventICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics - Bologna, Italy
Duration: 2013 Jun 302013 Jul 4

Publication series

NameProceedings of IEEE International Conference on Solid Dielectrics, ICSD
ISSN (Print)1553-5282
ISSN (Electronic)2159-1687

Other

OtherICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
CountryItaly
CityBologna
Period13/6/3013/7/4

Keywords

  • conductivity
  • electron beam
  • insulating material
  • space charge

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Condensed Matter Physics

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  • Cite this

    Tomite, N., Arai, Y., Ohki, Y., Nakmura, H., Hinata, T., & Washio, M. (2013). Space charges induced in polymers by electron beam irradiation and their decay profiles. In ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics (pp. 736-739). [6619737] (Proceedings of IEEE International Conference on Solid Dielectrics, ICSD). https://doi.org/10.1109/ICSD.2013.6619737