Luminescence of Cr-doped alumina induced by charged particle irradiation

Aichi Inouye, Shinji Nagata, Kentaro Toh, Bun Tsuchiya, Shunya Yamamoto, Tatsuo Shikama

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The ion-induced luminescence behavior and damage processes were investigated for Cr-doped alumina (ruby, α-Al2O3: 0.5 wt% Cr) under H and He ion irradiation with incident energies from 0.2 to 3.0 MeV. The total yield of the R-line luminescence (693 nm) was proportional to the projected range of the incident H ions. However, the He induced luminescence yield was not directly related to either the projected range or the incident energy. The ion-induced luminescence efficiency for the H ion was independent of the electronic energy loss, and that for the He ion decreased with increasing the electronic energy loss. The yields of the R-line luminescence rapidly diminished at the beginning of the ion irradiation. The reduction rate of the luminescence was adequately explained in terms of the nuclear energy deposition, indicating that the R-line luminescence centers were damaged by nuclear collisions.

Original languageEnglish
Pages (from-to)1112-1116
Number of pages5
JournalJournal of Nuclear Materials
Volume367-370 B
Issue numberSPEC. ISS.
Publication statusPublished - 2007 Aug 1

ASJC Scopus subject areas

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


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