Experimental and numerical analyses on terahertz spectra of oxidized cross-linked polyethylene

M. Komatsu, M. Hosobuchi, Y. Ohki, M. Mizuno, K. Fukunaga, X. Xie, Y. Cheng

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

3 Citations (Scopus)

Abstract

Chemically cross-linked polyethylene irradiated by gamma-rays to certain designated doses from 100 to 800 kGy at 100 °C in air was analyzed by terahertz spectroscopy. A peak appears at around 1.3 THz when the sample was irradiated by gamma-rays. By referring to the infrared absorption spectra obtained for the same samples, the peak at 1.3 THz was found to be due to an oxidation-related dipole. It was found that this peak can be fitted to both the Debye and the Lorentz functions similarly. In addition, numerical analyses were carried out using the density functional theory. As a result, it was found that the 1.3-THz peak is likely to be ascribable to resonance.

Original languageEnglish
Title of host publicationICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
Pages501-504
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

  • dielectric relaxation
  • oxidation
  • polyethylene
  • resonant vibration
  • terahertz spectroscopy

ASJC Scopus subject areas

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

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  • Cite this

    Komatsu, M., Hosobuchi, M., Ohki, Y., Mizuno, M., Fukunaga, K., Xie, X., & Cheng, Y. (2013). Experimental and numerical analyses on terahertz spectra of oxidized cross-linked polyethylene. In ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics (pp. 501-504). [6619803] (Proceedings of IEEE International Conference on Solid Dielectrics, ICSD). https://doi.org/10.1109/ICSD.2013.6619803