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Title: Proton and neutron irradiation effect of Ti: Sapphires

Various effects of proton and neutron irradiated Ti: sapphires were studied. Proton irradiation induced F, F{sup +} and V center in Ti: sapphires and 3310 cm{sup -1} infrared absorption, and made ultraviolet absorption edge shift to short wave. Neutron irradiation produced a number of F, F{sup +} and F{sub 2} centers and larger defects in Ti: sapphires, and changed Ti{sup 4+}into Ti{sup 3+} ions. Such valence state variation enhanced characteristic luminescence of Ti: sapphires, and no singular variances of intrinsic fluorescence spectra of Ti: sapphires took place with neutron flux of 1 x 10{sup 17}n/cm{sup 2}, but the fluorescence vanished with neutron flux of 1 x 10{sup 18}n/cm{sup 2} which means the threshold for the concentration of improving Ti{sup 3+} ions by neutron irradiation.
Authors:
; ;
Publication Date:
OSTI Identifier:
20050996
Resource Type:
Conference
Resource Relation:
Conference: 1999 IEEE International Conference on Plasma Science, Monterey, CA (US), 06/20/1999--06/24/1999; Other Information: PBD: 1999; Related Information: In: The 26th IEEE international conference on plasma science, 342 pages.
Publisher:
Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ (US)
Research Org:
Yunnan Univ., Kunming (CN)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SAPPHIRE; PHYSICAL RADIATION EFFECTS; OPTICAL PROPERTIES; DOPED MATERIALS; TITANIUM IONS; COLOR CENTERS