Optical vibronic spectra in reactor neutron irradiated α-Al 2O3

Rahman Abu Zayed Mohammad Saliqur; T. Awata; N. Yamashita; Y. Inada; K. Oshima; Qiu Xu; K. Atobe

doi:10.1016/j.phpro.2009.07.040

Optical vibronic spectra in reactor neutron irradiated α-Al ₂O₃

Rahman Abu Zayed Mohammad Saliqur, T. Awata, N. Yamashita, Y. Inada, K. Oshima, Qiu Xu, K. Atobe

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

The excitation spectra with the vibronic structure near the 360 nm absorption band and emission spectra with the vibronic structure near the 430 nm emission band been studied comparing neutron irradiated α-Al ₂O₃ at pile temperature (360 K) and at 20 K. In particular, the optical vibronic emission spectra of the neutron irradiated single crystal α-Al₂O₃ in low temperature have been analyzed. Huang Rhys factors of 360 nm excitation and 430 nm emission band are calculated. Also, Debye temperature has been estimated by curve fitting using temperature dependence of the excitation band. It can be seen that the excitation band derives from F₂⁺ type center and emission band is suggested as F⁺ type center.

Original language	English
Pages (from-to)	551-557
Number of pages	7
Journal	Physics Procedia
Volume	2
Issue number	2
DOIs	https://doi.org/10.1016/j.phpro.2009.07.040
Publication status	Published - Aug 2009
Event	2008 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, ICL'08 - Lyon, France Duration: Jul 7 2008 → Jul 11 2008

Keywords

Neutron irradiation
Vibronic structure

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1016/j.phpro.2009.07.040

Cite this

@article{5dd582a31dd645958235799bd7bb7ac7,

title = "Optical vibronic spectra in reactor neutron irradiated α-Al 2O3",

abstract = "The excitation spectra with the vibronic structure near the 360 nm absorption band and emission spectra with the vibronic structure near the 430 nm emission band been studied comparing neutron irradiated α-Al 2O3 at pile temperature (360 K) and at 20 K. In particular, the optical vibronic emission spectra of the neutron irradiated single crystal α-Al2O3 in low temperature have been analyzed. Huang Rhys factors of 360 nm excitation and 430 nm emission band are calculated. Also, Debye temperature has been estimated by curve fitting using temperature dependence of the excitation band. It can be seen that the excitation band derives from F2+ type center and emission band is suggested as F+ type center.",

keywords = "Neutron irradiation, Vibronic structure",

author = "Saliqur, {Rahman Abu Zayed Mohammad} and T. Awata and N. Yamashita and Y. Inada and K. Oshima and Qiu Xu and K. Atobe",

note = "Funding Information: The authors wish to thank Drs M. Okada and M. Nakagawa for their stimulating discussions and advices. This work has been performed by using facilities of the Research Reactor Institute, Kyoto University. This research is supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan; 2008 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, ICL'08 ; Conference date: 07-07-2008 Through 11-07-2008",

year = "2009",

month = aug,

doi = "10.1016/j.phpro.2009.07.040",

language = "English",

volume = "2",

pages = "551--557",

journal = "Physics Procedia",

issn = "1875-3884",

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T1 - Optical vibronic spectra in reactor neutron irradiated α-Al 2O3

AU - Saliqur, Rahman Abu Zayed Mohammad

AU - Awata, T.

AU - Yamashita, N.

AU - Inada, Y.

AU - Oshima, K.

AU - Xu, Qiu

AU - Atobe, K.

N1 - Funding Information: The authors wish to thank Drs M. Okada and M. Nakagawa for their stimulating discussions and advices. This work has been performed by using facilities of the Research Reactor Institute, Kyoto University. This research is supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan

PY - 2009/8

Y1 - 2009/8

N2 - The excitation spectra with the vibronic structure near the 360 nm absorption band and emission spectra with the vibronic structure near the 430 nm emission band been studied comparing neutron irradiated α-Al 2O3 at pile temperature (360 K) and at 20 K. In particular, the optical vibronic emission spectra of the neutron irradiated single crystal α-Al2O3 in low temperature have been analyzed. Huang Rhys factors of 360 nm excitation and 430 nm emission band are calculated. Also, Debye temperature has been estimated by curve fitting using temperature dependence of the excitation band. It can be seen that the excitation band derives from F2+ type center and emission band is suggested as F+ type center.

AB - The excitation spectra with the vibronic structure near the 360 nm absorption band and emission spectra with the vibronic structure near the 430 nm emission band been studied comparing neutron irradiated α-Al 2O3 at pile temperature (360 K) and at 20 K. In particular, the optical vibronic emission spectra of the neutron irradiated single crystal α-Al2O3 in low temperature have been analyzed. Huang Rhys factors of 360 nm excitation and 430 nm emission band are calculated. Also, Debye temperature has been estimated by curve fitting using temperature dependence of the excitation band. It can be seen that the excitation band derives from F2+ type center and emission band is suggested as F+ type center.

KW - Neutron irradiation

KW - Vibronic structure

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VL - 2

SP - 551

EP - 557

JO - Physics Procedia

JF - Physics Procedia

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T2 - 2008 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, ICL'08

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