Emission characteristics of O- ions from a bare surface of yttria-stabilized zirconia (YSZ) at elevated temperatures

Yukio Fujiwara, Atsushi Kaimai, Jeong Oh Hong, Keiji Yashiro, Yutaka Nigara, Tatsuya Kawada, Junichiro Mizusaki

Research output: Contribution to journalLetter

7 Citations (Scopus)

Abstract

Thermionic emission of oxygen negative ions, O-, from a bare surface of yttria-stabilized zirconia (YSZ) was studied with a quadrupole mass spectrometer equipped with an energy filter, which is capable of detecting negative ions. Emission characteristics of O- ions were investigated at temperatures ranging from 725 to 925°C under pressures of 1.4 × 10-4 to 3.2 × 10-4 Pa. Mass spectra of emitted negatively charged particles showed that O- ions are emitted into a vacuum from the bare YSZ surface at elevated temperatures. By examining the energy distributions of O- ions, the number of emitted O- ions was found to increase with the temperature of YSZ.

Original languageEnglish
Pages (from-to)L657-L659
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume41
Issue number6 A
DOIs
Publication statusPublished - 2002 Jun 1

Keywords

  • Negative ion source
  • O
  • Oxygen negative ion
  • SOIS
  • Solid oxide ion source
  • Thermionic emission
  • YSZ
  • yttria-stabilized zirconia

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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