Ion-induced luminescence and damage process of LiTaO3

K. Hoshi, S. Nagata, M. Zhao, T. Shikama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In order to examine the basic characteristics of light emission and damage accumulation in lithium tantalate (LiTaO3), ion-induced luminescence was measured. A broad peak centered at about 540 nm was observed under ion bombardment. The ion-induced luminescence was essentially the same as the luminescence under UV photon irradiation. The initial intensity of the luminescence was proportional to the projected range of the incident ions and independent of the electronic energy loss. The shape of the spectra was independent of the species, energy, and fluence of incident ions. The luminescence monotonically decreased with an increase in ion fluence. Assuming first-order kinetics in the annihilation and recovery process of the luminescent centers, the annihilation rate was proportional to the nuclear energy stopping power. It was considered that the luminescent center was mainly damaged by nuclear collisions, and the recovery of the damaged luminescent center was caused by local heating by the ion beam.

Original languageEnglish
Pages (from-to)149-152
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume315
DOIs
Publication statusPublished - 2013 Nov 15

Keywords

  • Defect formation
  • Ion irradiation
  • Ion-induced luminescence
  • Lithium tantalate

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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