Experimental observation and numerical calculation of space charge formation in gamma-irradiated polyethylene

Tatsuo Takada, Hironori Kitajima, Yasuhiro Tanaka, Yoshimichi Ohki

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

1 Citation (Scopus)

Abstract

In this paper, experimental results and their simulation on the residual space charge formation in γ-irradiated low density polyethylene (LDPE) are summarized. To measure the space charge distribution, the pulsed electroacoustic (PEA) method was employed. From the measurement result, it became clear that a large amount of positive charges exist near the cathode in γ-irradiated LDPE with dc voltage application, and that these positive charges enhance the electric field at the interface between the cathode and LDPE. On the other hand, almost no space charge was observed in non-irradiated LDPE. It is considered that the mobile carriers are electrons, and that such moved electrons and the remaining positive ions form the observed space charge distribution. The observed space charge distribution was simulated numerically based on a model where the conduction is governed by hopping of electrons. A good agreement between the simulation and the observation was obtained.

Original languageEnglish
Title of host publicationProceedings of Joint Conference: 1996 Asian International Conference on Dielectrics and Electrical Insulation Diagnosis
Editors Anon
PublisherXi'an Jiaotong Univ
Pages105-108
Number of pages4
Publication statusPublished - 1996
Externally publishedYes
EventProceedings of Joint Conference: 1996 Asian International Conference on Dielectrics & Electrical Insulation Diagnosis, 96'AICDEI & 4th-JCCEID - Xi'an, China
Duration: 1996 Oct 81996 Oct 11

Other

OtherProceedings of Joint Conference: 1996 Asian International Conference on Dielectrics & Electrical Insulation Diagnosis, 96'AICDEI & 4th-JCCEID
CityXi'an, China
Period96/10/896/10/11

Fingerprint

Electric space charge
Polyethylenes
Low density polyethylenes
Charge distribution
Electrons
Cathodes
Positive ions
Electric fields
Electric potential

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Takada, T., Kitajima, H., Tanaka, Y., & Ohki, Y. (1996). Experimental observation and numerical calculation of space charge formation in gamma-irradiated polyethylene. In Anon (Ed.), Proceedings of Joint Conference: 1996 Asian International Conference on Dielectrics and Electrical Insulation Diagnosis (pp. 105-108). Xi'an Jiaotong Univ.

Experimental observation and numerical calculation of space charge formation in gamma-irradiated polyethylene. / Takada, Tatsuo; Kitajima, Hironori; Tanaka, Yasuhiro; Ohki, Yoshimichi.

Proceedings of Joint Conference: 1996 Asian International Conference on Dielectrics and Electrical Insulation Diagnosis. ed. / Anon. Xi'an Jiaotong Univ, 1996. p. 105-108.

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

Takada, T, Kitajima, H, Tanaka, Y & Ohki, Y 1996, Experimental observation and numerical calculation of space charge formation in gamma-irradiated polyethylene. in Anon (ed.), Proceedings of Joint Conference: 1996 Asian International Conference on Dielectrics and Electrical Insulation Diagnosis. Xi'an Jiaotong Univ, pp. 105-108, Proceedings of Joint Conference: 1996 Asian International Conference on Dielectrics & Electrical Insulation Diagnosis, 96'AICDEI & 4th-JCCEID, Xi'an, China, 96/10/8.
Takada T, Kitajima H, Tanaka Y, Ohki Y. Experimental observation and numerical calculation of space charge formation in gamma-irradiated polyethylene. In Anon, editor, Proceedings of Joint Conference: 1996 Asian International Conference on Dielectrics and Electrical Insulation Diagnosis. Xi'an Jiaotong Univ. 1996. p. 105-108
Takada, Tatsuo ; Kitajima, Hironori ; Tanaka, Yasuhiro ; Ohki, Yoshimichi. / Experimental observation and numerical calculation of space charge formation in gamma-irradiated polyethylene. Proceedings of Joint Conference: 1996 Asian International Conference on Dielectrics and Electrical Insulation Diagnosis. editor / Anon. Xi'an Jiaotong Univ, 1996. pp. 105-108
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