Reproducibility of O- negative ion emission from C12A7 crystal surface

Quanxin Li, Katsuro Hayashi, Masateru Nishioka, Hideo Kashiwagi, Masahiro Hirano, Yoshifumi Torimoto, Hideo Hosono, Masayoshi Sadakata

Research output: Contribution to journalLetter

25 Citations (Scopus)

Abstract

Reproducibility, stability and oxygen-pressure dependence of O- negative ion emission from a synthesized crystal 12CaO · 7Al2O3 (C12A7) surface have been investigated. We found the continuous O- implantation into the C12A7 crystal can be simply realized by supplying electron and oxygen on the Au-deposited C12A7 surface via electrocatalytic reactions. The O- emission from the consumed C12A7 surface was recovered after the implantation operation (O2:0.13 Pa; 770°C) for 30 minutes. In contrast, the implantation influence on electron emission is negligible. The O- emission intensity is nearly constant in the O2 pressure lower than 1 × 10-3 Pa. The O- implantation mechanism will be addressed.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume41
Issue number5
Publication statusPublished - May 1 2002
Externally publishedYes

Fingerprint

ion emission
crystal surfaces
negative ions
Negative ions
implantation
Crystals
crystals
Oxygen
supplying
Electron emission
oxygen
pressure dependence
electron emission
low pressure
Electrons
electrons

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Li, Q., Hayashi, K., Nishioka, M., Kashiwagi, H., Hirano, M., Torimoto, Y., ... Sadakata, M. (2002). Reproducibility of O- negative ion emission from C12A7 crystal surface. Japanese Journal of Applied Physics, Part 2: Letters, 41(5).

Reproducibility of O- negative ion emission from C12A7 crystal surface. / Li, Quanxin; Hayashi, Katsuro; Nishioka, Masateru; Kashiwagi, Hideo; Hirano, Masahiro; Torimoto, Yoshifumi; Hosono, Hideo; Sadakata, Masayoshi.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 41, No. 5, 01.05.2002.

Research output: Contribution to journalLetter

Li, Q, Hayashi, K, Nishioka, M, Kashiwagi, H, Hirano, M, Torimoto, Y, Hosono, H & Sadakata, M 2002, 'Reproducibility of O- negative ion emission from C12A7 crystal surface', Japanese Journal of Applied Physics, Part 2: Letters, vol. 41, no. 5.
Li, Quanxin ; Hayashi, Katsuro ; Nishioka, Masateru ; Kashiwagi, Hideo ; Hirano, Masahiro ; Torimoto, Yoshifumi ; Hosono, Hideo ; Sadakata, Masayoshi. / Reproducibility of O- negative ion emission from C12A7 crystal surface. In: Japanese Journal of Applied Physics, Part 2: Letters. 2002 ; Vol. 41, No. 5.
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abstract = "Reproducibility, stability and oxygen-pressure dependence of O- negative ion emission from a synthesized crystal 12CaO · 7Al2O3 (C12A7) surface have been investigated. We found the continuous O- implantation into the C12A7 crystal can be simply realized by supplying electron and oxygen on the Au-deposited C12A7 surface via electrocatalytic reactions. The O- emission from the consumed C12A7 surface was recovered after the implantation operation (O2:0.13 Pa; 770°C) for 30 minutes. In contrast, the implantation influence on electron emission is negligible. The O- emission intensity is nearly constant in the O2 pressure lower than 1 × 10-3 Pa. The O- implantation mechanism will be addressed.",
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AU - Li, Quanxin

AU - Hayashi, Katsuro

AU - Nishioka, Masateru

AU - Kashiwagi, Hideo

AU - Hirano, Masahiro

AU - Torimoto, Yoshifumi

AU - Hosono, Hideo

AU - Sadakata, Masayoshi

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N2 - Reproducibility, stability and oxygen-pressure dependence of O- negative ion emission from a synthesized crystal 12CaO · 7Al2O3 (C12A7) surface have been investigated. We found the continuous O- implantation into the C12A7 crystal can be simply realized by supplying electron and oxygen on the Au-deposited C12A7 surface via electrocatalytic reactions. The O- emission from the consumed C12A7 surface was recovered after the implantation operation (O2:0.13 Pa; 770°C) for 30 minutes. In contrast, the implantation influence on electron emission is negligible. The O- emission intensity is nearly constant in the O2 pressure lower than 1 × 10-3 Pa. The O- implantation mechanism will be addressed.

AB - Reproducibility, stability and oxygen-pressure dependence of O- negative ion emission from a synthesized crystal 12CaO · 7Al2O3 (C12A7) surface have been investigated. We found the continuous O- implantation into the C12A7 crystal can be simply realized by supplying electron and oxygen on the Au-deposited C12A7 surface via electrocatalytic reactions. The O- emission from the consumed C12A7 surface was recovered after the implantation operation (O2:0.13 Pa; 770°C) for 30 minutes. In contrast, the implantation influence on electron emission is negligible. The O- emission intensity is nearly constant in the O2 pressure lower than 1 × 10-3 Pa. The O- implantation mechanism will be addressed.

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