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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)645-648
Number of pages4
JournalJournal of Nuclear Materials
Volume455
Issue number1
DOIs
Publication statusPublished - 2014 Dec

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Fingerprint Dive into the research topics of 'Dynamic measurements of radiation-induced electrical-property modifications in CVD-SiC under fast-neutron irradiation'. Together they form a unique fingerprint.

  • Cite this