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Ion irradiation effect of alumina and its luminescence

Abstract

The luminescence spectra of single crystalline alpha-alumina and ruby which has 0.02% of Cr{sub 2}O{sub 3} as a impurity, induced by 200 keV He{sup +} and Ar{sup +} irradiation were measured at room temperature as a function of irradiation dose. The analysis of the measured spectra showed the existence of three main luminescence features in the wavelength region of 250 to 350 nm, namely anionic color centers, F-center at 411 nm and F{sup +}-center at 330 nm and a band observed around 315 nm. As alpha-alumina was irradiated with He{sup +}, F-center and F{sup +}-center luminescence grew and decayed, but the behaviors of those were different from each other. It seems that a concentration quenching occurred on the F-center luminescence in the dose range above 1x10{sup 14} He/cm{sup 2}. Furthermore, F-center luminescence was strongly suppressed in ruby, compared with that in alumina. On the other hand, the luminescence band around 315 nm appeared only in the early stage of irradiation and did not show its growth part. The dose dependent behavior was similar to that of Cr{sup 3+} emission at 695 nm (R-line) in ruby in both cases of He{sup +} and Ar{sup +} irradiation. Based on the experimental results  More>>
Authors:
Aoki, Yasushi; Yamamoto, Shunya; Naramoto, Hiroshi; [1]  My, N T
  1. Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment
Publication Date:
Mar 01, 1997
Product Type:
Conference
Report Number:
JAERI-Conf-97-003; CONF-9603254-
Reference Number:
SCA: 360206; PA: JPN-97:010103; EDB-98:039170; SN: 98001890446
Resource Relation:
Conference: 7. international symposium on advanced nuclear energy research, Takasaki (Japan), 18-20 Mar 1996; Other Information: PBD: Mar 1997; Related Information: Is Part Of Recent progress in accelerator beam application. Proceedings of the 7th international symposium on advanced nuclear energy research; PB: 553 p.
Subject:
36 MATERIALS SCIENCE; ALUMINIUM OXIDES; RUBY; HELIUM 4 BEAMS; ARGON 40 BEAMS; KEV RANGE 100-1000; DOSE-RESPONSE RELATIONSHIPS; PHYSICAL RADIATION EFFECTS; CRYSTAL DEFECTS; F CENTERS; LUMINESCENCE; SPECTRA
OSTI ID:
588335
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE97764433; TRN: JP9710103
Availability:
OSTI as DE97764433
Submitting Site:
JPN
Size:
pp. 122-126
Announcement Date:

Citation Formats

Aoki, Yasushi, Yamamoto, Shunya, Naramoto, Hiroshi, and My, N T. Ion irradiation effect of alumina and its luminescence. Japan: N. p., 1997. Web.
Aoki, Yasushi, Yamamoto, Shunya, Naramoto, Hiroshi, & My, N T. Ion irradiation effect of alumina and its luminescence. Japan.
Aoki, Yasushi, Yamamoto, Shunya, Naramoto, Hiroshi, and My, N T. 1997. "Ion irradiation effect of alumina and its luminescence." Japan.
@misc{etde_588335,
title = {Ion irradiation effect of alumina and its luminescence}
author = {Aoki, Yasushi, Yamamoto, Shunya, Naramoto, Hiroshi, and My, N T}
abstractNote = {The luminescence spectra of single crystalline alpha-alumina and ruby which has 0.02% of Cr{sub 2}O{sub 3} as a impurity, induced by 200 keV He{sup +} and Ar{sup +} irradiation were measured at room temperature as a function of irradiation dose. The analysis of the measured spectra showed the existence of three main luminescence features in the wavelength region of 250 to 350 nm, namely anionic color centers, F-center at 411 nm and F{sup +}-center at 330 nm and a band observed around 315 nm. As alpha-alumina was irradiated with He{sup +}, F-center and F{sup +}-center luminescence grew and decayed, but the behaviors of those were different from each other. It seems that a concentration quenching occurred on the F-center luminescence in the dose range above 1x10{sup 14} He/cm{sup 2}. Furthermore, F-center luminescence was strongly suppressed in ruby, compared with that in alumina. On the other hand, the luminescence band around 315 nm appeared only in the early stage of irradiation and did not show its growth part. The dose dependent behavior was similar to that of Cr{sup 3+} emission at 695 nm (R-line) in ruby in both cases of He{sup +} and Ar{sup +} irradiation. Based on the experimental results mentioned above, the processes of defect formation and excitation in alumina in the early stage of ion irradiation will be discussed. (author)}
place = {Japan}
year = {1997}
month = {Mar}
}