Dynamic measurements of radiation-induced electrical-property modifications in CVD-SiC under fast-neutron irradiation

B. Tsuchiya, T. Shikama, S. Nagata, K. Saito, T. Nozawa

研究成果: Article査読

5 被引用数 (Scopus)

抄録

In situ measurements of the volume electrical conductivities of chemical-vapor-deposited silicon carbide (CVD-SiC) samples were carried out under irradiation by 2.5- and 14-MeV fast-neutron beams in air at room temperature. A slight radiation-induced conductivity (RIC) was detected under fast-neutron irradiation. A radiation-induced electrical degradation (RIED)-like behavior was observed in the form of degradation of the base conductivity in the absence of irradiation with increase in the fast-neutron fluence. The SEM micrograph images and XPS analysis of the surface of the fast-neutron-irradiated CVD-SiC samples revealed that the dissociation of carbon from existing SiOxC3-x compositions did not only occur via displacement damage, but also via ionizing effects (radiolysis), thereby leading to the observed RIED-like behavior as well as RIC in the electrical properties of the CVD-SiC samples.

本文言語English
ページ(範囲)645-648
ページ数4
ジャーナルJournal of Nuclear Materials
455
1
DOI
出版ステータスPublished - 2014 12月

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 材料科学(全般)
  • 原子力エネルギーおよび原子力工学

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